Security & updates
For many devices, the vendors should be forced, by law to make security updates for a long period of time.
For a phone at least 5 years, preferably 10 or more. Many older phones (especially it if was high end at the time of purchase) are still good and functional today, and sometimes better spec'd that todays cheapo's, but no support.
Apps may work, but if you try to 3rd party OS them, some apps recognise and instantly fail. Why, the OS is now more secure and I only did this as <vendor> does not update the OS for this model any more.
With things like W11. I can understand to a degree, so no 32bit chips - fair enough, or going from PPC to Intel, then Intel to arm - fair enough, but on the whim of a company to block perfectly good devices - should not be allowed or they are forced to provide a good compensation scheme - and not just £50 for a 6th gen intel based device)
Can you imagine the hoohar with TV's ? OK, we lost analog, but a lot of more modern TV's were digital for years - so stop scanning Analog. TV's for years have had HDMI, so an external box to give freeview or a smart stick to get others. can even get HDMI to Scart to get the older generation TV's going. If your TV does not have SCART you really are on a hiding to nothing, but lets be honest, that TV would have had a damn good innings so I think at this stage if is fair to say you may need a new TV