As for uniform licensing: a patent provides the right to control use of a technology. That control might be "all comers: pay me $X to do Y", it might be "I and only I can do Y", it might be "Me and my friends can do Y, you're fucked". Any of these are valid outcomes. Though if the adversary has other patents of use to you, you might be persuaded to moderate your stance.

The point of most patent portfolios is something to swap with other established vendors to create a barrier of entry for anyone else. (Which allows all of you to raise profit margins.)

Cheers,
Ben