I think rails is quite powerful and great for prototyping. But I’ve noticed lots of rails developers optimize so heavily for making things DRY, they make the most hard to debug monstrosities full of meta programming all so they could write a thing one one line of code instead of 3.
Still for starting out it’s pretty awesome.
If your company grows enough that you have legacy data models that no longer fit the designs demanded by customers - First: congratulations, that is awesome. Second: you are either going to want to be very careful how you add new things to your legacy data models, and how you define your boundaries, OR consider migrating off rails. If you start just slapping things on whatever data model is most convenient, to keep up with demands from product, you are going to be in a world of hurt that will take exponentially longer and longer to get out of.