If “theft” is your only concern yes. It’s a common misconception that copyleft licenses stops rich companies from stealing. It does not.
I am more concerned about societal enrichment vs corporate enrichment.
If you release some code under MIT that a company finds useful, they could take it, improve it a bit, and resell it back to the community. This enriches the company at the expense of the community. Without the original code the company could have never taken it as a basis to sell and the community that wrote the code gets nothing.
If you release that same code as AGPL the company can take it, improve it and sell it to the community. BUT the difference is that the community now benefits from those improvements too. Maybe more improvements happen. Maybe a second company takes those improvements and sells them too. The community would have all the improvements and would benefit from greater competition.
With copy left licenses. The community is enriched and companies are enriched.
With MIT style licenses. Companies are enriched at the expense of the community.
Ask Cisco how they feel about it. There is a precedence of companies using copy left licensed software and the community benefiting from it.
If companies are just going to be blatantly criminal and violate software licenses they were going to do that anyways. I’m not sure how much experience you have working in or with mega corps but the ones I have worked with in the past HATE the idea of opening themselves up to being so blatantly liable.
When I worked in big tech we had a license scanner that checked the libraries we were using. Anything strongly copyleft would be flagged and we would be contacted by legal.
You might have experienced working with companies that act otherwise. I encourage you to call them out, maybe work with the FSF to get another Cisco style ruling.
Funny you mention ZFS though. It’s not the GPL that was the issue. It is CDDL that’s incompatible. GPL is generally comparable with foss licenses. MIT, MPL, Apache, BSD all are comparable. It’s just CDDL that’s incompatible with copyleft in general.
If you think the community will benefit more from MIT licensed software than copyleft I think you need to look harder at the modern corporate world. Corporations are not altruistic.
This being said I’m not sure there is much more to be said here. You’ve gone to saying I believe in magic and that there are corporate GPL conspiracies. I just don’t see the proof and I think there is not much more to be gained by such talk.