The lack of an enthusiast tier between Free and $10/month has kept me from being a customer. For years they have been trying to add value add features, with some of the forced changes making the platform less attractive to me. The features have really been geared around justifying business site license, not 'prosumer' usage.
The recent change of the free tier so that it no longer allows me to pair all of my devices was the last straw, and I've moved off their service.
That is also what kept me away from it. I love all of their features it is price bracket that force me away. I love their SmartSync but that's not enough to make me buy a 2TB plan.
So now I am using an extension to make iCloud work a lot like SmartSync
The recent change of the free tier so that it no longer allows me to pair all of my devices was the last straw, and I've moved off their service.