And furthermore, I could ask if you're multi-homed on the Internet? Got your own ASN with a BGP session and a /24 delegation? Your ISP's not a monopoly, so why are so many people "tied to one service"?
What about your health insurance? BCBS and UHC as a backup? Do you have more than one PCP?
Ah, but it's not good being tied to one of each service; it's just extremely impractical to have parallel infrastructure in some cases. (I've been without plumbed water before because the water service failed locally. It would certainly have been nice to have a competitor available.) The fact that monopolies exist isn't evidence that more monopolies is what we want.
The answer to the rest of your questions is "… yes, isn't this pretty normal?".
Multi-homing your Internet connection is in a completely different category of service because it's so trivial to fail over, but in fact my phone is routinely multi-homed (to a WiFi network and through 5G), and my laptop will fall back to its hotspot, so yes; aren't many people? That redundancy is enough for me not to run my own Internet infrastructure.
I have two parallel medical infrastructures (the NHS and private insurance), which I routinely switch between as appropriate; again, in my social class this is common. I have multiple credit cards, which is the closest I come to PCP, which is again common, and again I routinely switch between them.
That depends on who is defining "good" and what your criteria are. There are drawbacks and there are advantages to these things. You've faced some practical realities and admitted that we can't always have this idealistic consumerist candyland choice of a box of chocolates full of providers of every rainbow service under the sun. Please don't make blanket generalizations about value judgements that may have different factors for different people or organizations. It's paternalistic and condescending.
Sure, anyone is free to define anything they like as "good". If you like being unable to change providers for things, then that is certainly your prerogative (and boy do I need to learn how to start selling services to you)! I predict that most people have very different utility functions to you in this area, though.
> Being tied to one service is never good
And furthermore, I could ask if you're multi-homed on the Internet? Got your own ASN with a BGP session and a /24 delegation? Your ISP's not a monopoly, so why are so many people "tied to one service"?
What about your health insurance? BCBS and UHC as a backup? Do you have more than one PCP?