Strong disagree on the second point. I don't want the choice of whether I switch tools to be based on an arbitrary factor such as when a website suddenly doesn't exist anymore. I might be very heavily invested into that tool in terms of project files, learning curves, workflow integration etc. I also might be in the middle of something very important with a deadline at the moment that I'm unable to access the site.

Other points that weren't raised - I want to be free to work in situations where I have poor or no internet e.g. when traveling.

Tying tools down to whether or not a website is available and you have reliable internet access is a huge step backwards in my opinion.