The way i see it, even if DF stops entirely right now its legacy will live on. Its even displayed in a art museum and not only a cultural icon of the 21st century but endless accolades have been detailed and immortalised, and many yet to be discovered and generated within a humble session of the game.
Side by side, emulation is the best kind of flattery, many games attribute themselves to DF. Even if they are not very polished games and usually divergent its a extreme task also to support such open ended content with consistent updates and content to expand. Each deserves their own merit but often expire.
Look at such titles like Towns and Gnomoria, both implicit and explicit 'clones' or entries of the 'genre' put forward for retail value. Both games relied on the dev or a small team heavily for input but in the end began to stagnate because usually of a lack of ideas and a comfortable amount of financial capital that is generated from the product (in the end, that is what it is) They have their own lives but sometimes fans take this the wrong way and feel a little abandoned.
- The Towns dev went awol, the game as he left it is playable but i dont forsee he uses it as a main source of income anymore, initially a successful game with good media coverage at the time but it fizzled out and died.
- Gnomoria received its 1.0 patch in feburary and since the dev has took a backseat and seems to have lost contact on achieving their primary goal
Where the Adam brothers succeed is that they have a passion for the project, not to mention people feeding that passion with donations (to show rewards and incentive to lending their ear to hear a suggestion) and also a broad and flexible vision and plan to how they approach it.
- Zach for instance is completely crucial to the development of DF on paper, his short (*and sometimes book length such as Cados magical adventure*) stories form the idelogical backbone of the development and set goals ahead in the future.
- And without Tarn we wouldn't have the working systems and physical development presence that we have come to enjoy
In a professional way, they are the Lauren and Hardy of the gaming industry (i mean that in a flattering way) for the exceptional quality of work that will live on and entertain for a long time as a valued and revered double act project, until the very end when they cannot physically continue. People in 2116 will probably still be playing versions of the finished original (with some additional modifications to run it on computers of the time, through a emulator etc), and speaking very optimistically the finished game itself may end up being archived for cultural history and art.