Since I started using Hetzner in 2020 they have increased prices 4 or 5 times and I am now paying 50% more than I started, but my grocery bill also went up 50% and my rent went up 50%, so that's just matching inflation (even though the government said inflation was 5%). Now they're doing a 300% increase (not for me) all at once.

The reasons really doesn't matter. As long as they are in top of price/performance/quality nobody will switch. Once they stop to be then people will think about it.