I’m not sure why you are getting downvoted. I’m optimistic for the same reasons and I think you are right about rapid growth being dangerous.
Linux was slow growth, not to mention GNU, but it is so good, and attracted the right kind of contribuitors.
Running these services has a cost and surely over the time it takes to grow, solutions will emerge. It is best to recognize those challenges and address them.
Because I’m Tekken all the leftovers.