What makes you think that a small company will have the resources to bring this to market professionally with a handful of sbuscribers

You don't need a huge workforce for a compiler or middleware product. One of the best Z80 compilers was written by a single man, Andy Gariepy. Google wc.dll to see the penetration of Rick Strahl's West Wind product for VFP. Rick is another one-man-band. And then there's your own focus as a MVP for mobile applicatiion devices: can useful mobile apps be written by a single person? We know they can and that somebody who writes a good one can earn enough to retire. The mindset that only huge teams can make progress is of benefit only to the plodders who want to hold innovative people back or big companies that want to stifle the innovation that usually comes from the smallest teams.