While it’s sad to depend on a web service that could be gone tomorrow, it’s not like we really “own” software installed locally either. License agreements contain the phrase “the software is licensed, not bought” for a reason.
For example the software I sell in my day job has an expiration date of a year, there is no perpetual license. It literally won’t start after a year. The difference between that and a web service is pretty slim.
It's not. Ask anyone working on MMO server emulators. Once the server is gone, that's it. With thin browser client you might as well create a new CAD software from scratch. Having actual software on pc means you can at least attempt to crack it.
