You missed the part with no technical hard-limits.
And you missed the part where you quoted "up to 64". That's an upper limit. It might not be a technical limit but it's practical limit. 64 is a long way from infinity, why do think they use so a tiny number as a typical upper limit?
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You seem to be just too ignorant to accept that a scenario created with PP would benefit from players trying to stop others from unwanted actions.
Power Play: If I want to Undermine a system you Fortify it, I don't make you pay more CC because you stopped me. Doesn't matter which mode we are in, you stop me Undermining. If I want to Fortify, you Undermine, I don't get a free system because you stopped me. Again, works from any mode.
Faction Influence: I do missions in Solo to promote my faction above yours, you do missions in Open to promote your faction above mine. You stopped me.
Same influence on the galaxy. You can affect me just as I can affect you. You can stop me using the tools/tasks that we all have available. You cant stop me with force because I don't want to play that game. FD don't want me to have to play it.
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