Mastodon et al prove it works.
Mastodon et al prove it works.
Honestly, for considerable portion of its use, it works mainly because nobody looks too closely or trieso actually enforce it.
The other considerable portion was/is bait&switch schemes involving dual licensing and having developers sign copyright transfer forms to parent org, which benefits from selling commercial license when someone runs afoul of compliance.
Each tool has its use and serves its specific purpose. What works for Mastodon might not work for others trying to advance different goals.
In the end, the AGPL is huge but not a silver bullet.
The only real drawback is ensuring any outside contributions can be utilized this way, such as with a CLA.