They know what their priorities are:
$, $ and more $$$$$$$
They're like most video game manufacturers these days
You mean just like every single company ever?
It's not like the game developing companies were uninterested in making profit in the 80's and 90's, they just weren't anywhere near as good at it back then.
Clearly, Activision are making products and providing services that people want and are ready to pay the prices for. That is exactly what they should do and nobody should be surprised that they are doing it.
Let's not beat around the bush; the issue at hand is that some people are upset because the things they disapprove of are popular. It has nothing to do with eroding the fanbase or whatnot, it is entirely a question of you not liking what they do, while millions of people clearly don't mind.