That's the line the clouds, MSPs, and service contract providers sell you on, but it's never true. When you need help you're getting some minimum wage slave who hired on 6 months ago, and is struggling to juggle the dozens of other clients competing with you for his time, too. When you don't need help, they get to take your money for doing nothing.
Anything your provider can do for you, you can do at less cost. Cut out the middle man and you're far better off.
All that knowledge is now in-house, and you have access to it at a moment’s notice.
I think it's also worth considering that many outfits wouldn't get good value from the 24/365 coverage you propose and don't care to pay for it.
To pay them around 70K, you need to budget for 120K. It will go into social security, taxes, training, overheard of management, HR team, other costs centers like a margin to account for sickness, absenteeism, people who are trying to "find themselves", personal crisis etc...
If some cloud setup can halve your sysadmin labor, then a company with 20 sysadmins can go to 10 sysadmins, but a company with 1, 2 or 3 sysadmins still needs all of them.
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That's how I've seen it working in datacenter:
cheapest junior admins (450$/month) were having night shifts
and if something broke, then they were calling an engineer
For 1 bare metal server? You do know these things run on electricity, right?
The main difference between what we've got and a proper setup is on the order of about €5k of fixed costs, all of which have a lifespan of ~decades. The savings from owning your own hardware might shock you.
Also, if you think that the "professional" hosts do any better, consider that that Hetzner box you linked is a desktop machine shoved onto a rack shelf.
