While timing is important, I think the OP made a great choice in targeting an underserved, niche market. That's where a lot of great opportunities still exist,

While timing is important, I think the OP made a great choice in targeting an underserved, niche market. That's where a lot of great opportunities still exist, IMO. The game market by comparison is much more highly competitive and has quite different dynamics, I would hesitate to use 'failed' games as a counter-example.