I've cut down my subscriptions by a lot over the past few years, and I've gotten very close to what I consider a minimum. Whenever possible, I like to buy outright.
However, surely you can understand how not every product can function as a one time purchase. For something like a password manager, they are providing an ongoing service. They are storing and serving your data.
You can self host, sure, and I'm doing a lot of that lately. But not everyone has the capacity or desire to.
All that said, this leadership shakeup is concerning and I think I'll be migrating to Proton, since I already have a Duo plan.