my opinions:
SE is an a-ok game company, generally produces a quality product and I have no issues with them.
rockstar also produces a quality product, but the whole shark card and gta online thing is kind of a richard move. they're better than that, they don't have to be that desperate for money.
konami fired Hideo, and for that they will pay. but in all seriousness, I haven't add any problems with them so far.
forget microsoft.
I don't see what your problem is with ubisoft, generally they release a quality product and in a timely manner as well (save for the division being pushed back several times). the only thing I see wrong with them is that whole watch dogs thing where they tried to pull the wool over pc gamer's eyes, that stuff ain't cool.
EA. okay, here we go. EA is honestly one of the worst companies out there. while generally they release a popular (note: not quality, necessarily) product, often times the product is rushed, lacking in content and gameplay quality, and is primarily just another cash grab. they are greedy and don't listen to their fans, all they care about is the money, and it's disgusting.
blizzard, I enjoy blizzard although I've only played four of their games, starcraft, starcraft 2, diablo III, and WoW though not extensively. I'm not sure what warlords of draenor is but I assume it has something to do with WoW or Warcraft. could someone explain this? too lazy to look it up.
and activision. don't even get me loving started on activision. they're worse than EA, taking a skeleton Call of Duty game, making some new textures for it, and releasing it over and over every loving year. how the forget do they live with themselves? not even worth my time, jesus christ.