I'd also like to hear when Capitalism is forced to sabotage itself, and how it cannot handle true prosperity.
On a purely philosophical level, it's because capitalism requires the constant exchange of capital, and thus a constant need for the exchange of that capital. If you begin to reach a level where you can create and propagate technology which obsoletes and disrupts this system, which we are starting to see on the horizon, it is in the rational interests of people who have greatly benefited from capitalism to ensure that this technology is limited and artificially controlled. While you would receive the greatest prosperity from allowing such advancements to run free, it puts the economic system we have aligned our world to in a bad spot. And we all know what lengths politicians will go to in order to protect their economy.
If you'd like some examples, I can give you both situations in which this failed and in which it succeeded (for now...). A good example of a failure is Wikipedia. Free, open-source, community based....absolute hell for traditional encyclopedias, but because it wasn't stopped Wikis are now a staple of the internet, and we have a far superior encyclopedic system. While I grant you that the risk of false information has been raised, the sheer fanaticism towards proper citation from many Wiki writers and Wikipedians in particular keeps this risk from becoming a serious burden to anyone paying attention. Further more, we now have literally hundreds of Wikis concerning such narrow and unnotable subjects that never would have received any attention from traditional encyclopedias.
The best success (and I will note that I think most of these, and as such capitalism as we know it, are ultimately a futile struggle against the inevitable) would be that of copyright law. Businesses want to have a monopoly on "their" ideas (even when ideas are the creation and property of individuals), and as such manipulate the code of law in order to ensure a continued and perpetual stifling of idea spread and publication. The reason for this is nothing but profit. Now, do not get me wrong. Copyright isn't even a bad thing. But we now face a mutant copyright spawned from the rational copyright of previous years. Once, copyright kept an individuals works exclusive for a short period (5-15 years) that would allow them to receive profit and thus incentive to continue creating in our pre-abundant economy. Now, however, copyright is likely more of a drain than a benefit to the economy and definitely to the creative scene as a whole. Now, in the US, copyright lasts 70 years after the death of the author. Being dead, they aren't incentiveized to do anything, and the work remains out of public hands even if they stop creating entirely long before their death. The copyright passes onto whatever corporation held their rights (because these days it is almost impossible to get something widely published without such an agreement), and thus these businesses are incentivized to hold onto old stuff for as long as possible, and be as exclusive as possible about it. It is the artificial management of ideas, in order to hammer non-capital into a capitalistic shape.
Now, you may not be particularly alarmed by that. Many are not. But what if it was something a little more vital than creative ideas? Well, fret naught, because we've already got that as well. Can you say, pharmaceutical copyright? Proprietary chemicals? Genetic ownership? So many advances to fields concerning vital substances, kept solely in the hands of the corporations who currently hold the standing rights to them (and don't think this stuff doesn't get traded around, a meritocracy this is not).
And even that might not alarm you yet. But we've got a long way to go, technologically. A lot of good could be done that is not being done already. As long as continue to advance without gaining an appreciation for free information, the disapproval of keeping it locked up will only grow. And you might say that forcing the publication of information like that immediately or within a short timeframe is unfair to the creator, but that would be ignoring that it is not fair to the creator already. It is the larger organization that benefits in this modern age. In a more public system, however, the creator's contributions will be properly recognized instead of downplayed, and as such they will find themselves far more rewarded.
Do not misunderstand me. I am not a communist. Or an anarchist. Or even that anti-capitalist. But it is an old system. A system that is starting to fail in keeping up with the changes that humanity is inflicting upon itself and the world, no matter how well it is managed. I don't even particularly dislike capitalism. But it is doomed. And it will only get more doomed. And we need to be ready when the time comes to evolve from capitalism, as we once evolved from mercantilism, and as we once evolved from barter trade, into something better for mankind.