Use the AGPL. I promise not to sue any individual person or non-profit org.
And you’re right, for-profit companies should either stay away for safety or contact me for terms.
And you’re right, for-profit companies should either stay away for safety or contact me for terms.
So if you do not want to allow this, then you must use something other than the AGPL. (Or maybe you could do some funky patching of the AGPL's terms, but you'd have to be careful to only do so by reference, since its text is copyrighted by the FSF, who only permit distribution of verbatim copies.)
Also, you should probably avoid calling it "fully free & open source" as you did in your original comment, since you intend for it to be neither Free nor Open Source in the sense ordinarily meant by FOSS.
But your intent, if you want to avoid for-profit organizations using your software, is to impose a restriction on users not to redistribute the software in certain ways. It is your right to add such a restriction to your software, but it is no longer FOSS, since that term necessarily implies an unlimited right to redistribution (within the law).
Redistribution is unlimited for all non-commercial use. This has been through legal review.
If you’re still confused, please contact me directly and I’ll be happy to answer any other questions.