TiVo did not do what is currently referred to as Tiviosation, they just broke their proprietary software on top of Linux when you modified Linux, which you could still do. Both the GPLv2 and GPLv3 require you to be able to modify and reinstall GPL software, so devices that are locked against this are GPL violating. There is the AGPL for the SaaSS problem.

https://sfconservancy.org/blog/2021/mar/25/install-gplv2/ https://sfconservancy.org/blog/2021/jul/23/tivoization-and-t... https://events19.linuxfoundation.org/wp-content/uploads/2017...