Vendor lock-in with a monthly subscription where the price can change at any moment or the company may disappear along with your product. I wouldn't build my business on that.
I would love to make a license where you could export and then you can run it forever yourself on your own server! It’s not because I don’t want to do these things, it’s just I’m one person and I never get the time to do everything I would like to do.
Yea I get that, I still wouldn't want to invest a serious amount of time on a product to build on such a platform. Best of luck though maybe it still works as a business.