Grsecurity goes private

I don't know about England, but in the US companies can generally refuse service to another _company_ for any reason. Very much including "we don't want to deal with a company with a gay CEO" or "we won't sell our product to Democratic supporters".

There are certain limitations like local utilities and other regulated monopolies, and some cases of tortious interference, but they don't really apply here.

Discriminating against individuals is somewhat more complicated, the law in the US recognizes several enumerated "protected classes" ( https://en.wikipedia.org/wiki/Protected_class ). But "political opinions", for example, are not a protected class - it was absolutely legal for Hollywood to blacklist "communist supporters" during the McCarthy era.