This is a DISASTER.
I have bought many copies of FTM.
But only to get cheap subs to Ancestry.co.uk.

I install it on a virtual Windows PC, connect it up to ancestry.co.uk to get the sub to activate, then delete it.
I keep my Database, on Linux, Using Gramps. The data is
mine, and my backups are extensive.
I sometimes update my tree on Ancestry via an uploaded GEDCOM. I do this to
allow other researches to find and contact me (they're probably relations, of course).
Having a tree on Ancestry.co.uk also allows easier keying of searches.
My data in the cloud, reliant on a subscription, or someone else's infrastructure?
Not happening.
BugBear