Yes, of course there's the financial performance of a studio and then the identity of a studio that people get attached to.

I didn't get into Blizzard games because they were a financial powerhouse, I got into them because they were fun as hell and the identity of Blizzard at the time gave me faith that their next release would be just as fun. That faith started deteriorating around 2005/6 for me, and was gone within a month or so of SC2 releasing. The identity of Blizzard of the 90s and early 2000s that I fell in love with was gone by 2010.

I can go into more detail about the shortcomings of all of the games from 2010 on (IMO, obviously), but the overall point is that they are fundamentally different than their older games and might as well have been from a different studio.