For example, imagine Digital Ocean using MongoDB to store server configurations. AGPL would force them to open-source their whole infrastructure. All of it. Or pay to get a different license.
I don't have a moral argument to make here -- just making sure people realize the actual trade-offs. AGPL is theoretically for a world where closed source software is simply not allowed to co-exist with opensource, even if you don't distribute it, but simply run it / host it / use it. But that world doesn't exist, so it does the opposite: it is actually used to make sure some of your users have to pay. It enables a business model.
I don't think that's correct. From MongoDB the company:
> Note however that it is NOT required that applications using mongo be published. The copyleft applies only to the mongod and mongos database programs. This is why Mongo DB drivers are all licensed under an Apache license. You application, even though it talks to the database, is a separate program and “work”.