Anyways, your point is not totally invalid. I did a mistake when I changed from free to paid. I started with 99 Cent per month. The goal was to convert as many users as possible. This worked well. Only about 10-20% stopped using my service. However, it made future price increases harder.
Some people would pay more. For some people the service delivers a a lot of value and they'd probably pay 10 bucks a month. However, there are also quite a few people for whom 2 euro is the limit, especially since the long-term costs would explode for them.
And I can't experiment with pricing. The niche is too small to have this go unnoticed. I know, because I tried. Either I increase it globally for everybody or not. To be honest, maybe I didn't find the perfect pricing point yet, I don't know. But it's okay, because I can live quite comfortably.