If you're trying to describe AWS as being opposed to making open source contributors, this appears to be not true, at least at cursory glance: https://aws.amazon.com/opensource/
I always hear these type of complaints about Amazon but it's not clear to me why they're always singled out for doing something vaguely anti-open-source. They don't seem to be doing anything different than any of the other F500 companies that selectively open source things but still produce a lot of closed source. The "traditional" way to deal with companies that don't give back is copyleft. If that's not enough and you want to totally deny access to these companies, that's fine, use a proprietary license. It makes no sense to me to insist on calling that open source, when you yourself would admit to purposefully trying to make it so it's closed source to a certain group of people.
I always hear these type of complaints about Amazon but it's not clear to me why they're always singled out for doing something vaguely anti-open-source. They don't seem to be doing anything different than any of the other F500 companies that selectively open source things but still produce a lot of closed source. The "traditional" way to deal with companies that don't give back is copyleft. If that's not enough and you want to totally deny access to these companies, that's fine, use a proprietary license. It makes no sense to me to insist on calling that open source, when you yourself would admit to purposefully trying to make it so it's closed source to a certain group of people.