[freefaler]

Indeed... I've run on Hetzner for 20 years with triple redundancy and VPS for batch processing/CI and some internal tasks. My costs are fixed and only on very big database alters/upgrades/migrations our service has any downtime.

I have a friend who recently made a stupid bug in his processing pipeline on AWS. He woke up on morning and saw a message from his bank that his CC was over the limit.

When we have a bug, our Nagios send us a message that responces are more than 150% of average and we do a rollback.

So it's not only the risk of vendor lock-in, but also in surprising bills and policy changes, updates and other 3-rd party risks you end up with.