This seems weird to me. It's easy to convince me to use an "always-free" tier service. It it gets big enough to cost money, I'm usually happy. If it costs $7/mo

This seems weird to me. It's easy to convince me to use an "always-free" tier service. It it gets big enough to cost money, I'm usually happy. If it costs $7/mo, suddenly it becomes a dumb thing that has to be thought about. Are they trying to avoid locking me in?