They don’t have customer support. Otherwise, they would make much larger inroads. Most businesses don’t want to take the risk migrating to paid Google services for that reason.
That's wrong, I don't know where you're getting your information. Enterprise plans absolutely provide support, and I've never heard of that being a sticking point in migration to Google. Are you confusing it with the free consumer versions?
It looks like a lot of the project planning SAAS are trying to take the crown too.
It’s just strange that Google seemingly gave up.