It's a company that's model is one I support. If you're not paying for the service, you are the product. Eventually the free-ness of other solutions will run out. There's only so much VC money and grant money that doesn't have alterior motives.

Paying a company to provide a service, which does cost real money to operate, makes me more happy if they abide by their rules.

But it's a snowball type issue. I'm not going to use Threema if nobody else I need to talk to doesn't use it. And they aren't going to use it if nobody else does. WhatsApp has critical mass across the world except USA because iDiots don't understand. Signal and Telegram have mostly negative awareness due to copaganda telling the general populace that encryption is bad and only shady people use encryption to hide criminal activity. Everything else, (excluding China and their whole different ecosystem) is really just nerd talk between nerds.