It’s about targeting the ones you can legally target. I’m not going to get into it again but Valve does their lootboxes differently to almost every other big developer/publisher and that way of doing things has gotten them in trouble. Should all companies that in practice are gambling get into legal trouble? Yes. Should Valve get a pass because others get away scot-free? No. If 6 people rape someone but legally there’s evidence to convict one of them you don’t give that one person a free pass because the other 5 can’t be convicted.

In this case there’s one company, Valve, where you have some legal basis to get them in the court and there’s no legal basis for other companies even though they’re largely doing the same thing. You may not like it and might consider it unfair but that’s just how the legal system works.