Earlier quoted context omitted.
Sounds like the license did its job quite nicely. If those companies cared enough to negotiate new license terms, they could pay you for such a license.
It's not only companies who ask for license changes, Google and other employees ask licences to be changes too simply because the corporation they work for forbids even looking at the source otherwise. For example: https://github.com/pebble-dev/rebblestore-api/pull/31
Google publishes it's open source docs, so you can just look: https://opensource.google.com/docs/using/agpl-policy/
We also banned patching agpl projects, I'm just too lazy to find that link for you.