I ask this because I think of the recent switch of Ubuntu to the Rust recode of the GNU core utils, which use an MIT license. There are many Rust recodes of GPL software that re-license it as a pushover MIT or Apache licenses. I worry these relicensing efforts this will significantly harm the FOSS ecosystem. Is this reason to start worrying or is it not that bad?
IMO, if the FOSS world makes something public, with extensive liberties, then the only thing that should be asked in return is that people preserve these liberties, like the GPL successfully enforces. These pushover licenses preserve nothing.
None. The closest you can get is the AGPLv3.
If you go further, it will no longer be open source. This is the case for the Server Side Public License (SSPL) for example. It requires the entire system configuration to be released under the same license*. This sounds “open source friendly” but it’s actually just a proprietary license because it’s not realistically possible to legally comply with it. You cannot run standard hardware without proprietary firmware, which means you cannot run SSPLed software on it legally.
*This only applies if you host the software as a service but the result is the same. It basically violates the freedom to use the work for any purpose.