We can’t say what future holds, I hope FT makes it big and I get my money back.
What I can do is compare both platforms based on features that exist now and I’m not happy with the pace of FT.
I recall FT moving to serverless etc which end user doesn’t really care but it should in theory help them to scale based on load. And I read message about moving processing of basic orders to 3pm 
My friend who is also investor in FT prefers T212 