I'll expect more from the publishers I like. Bioware, Naughty Dog, SE, Nintendo, I expect high quality games from them. If they disappoint me it does affect my enjoyment of the game even if it is overall about the same quality or better than some indie game. Because expectations are a part of how human beings view things. However, that's not all of it and if a game is generally great by my standards I will play it if I can no matter where it came from. Also, my standards are different for different types of games. My standard for a 4 hour romp like Journey is much different than for an open world RPG. These big time publishers tend to make big time games so I have big time expectations.
I think this thread stems from the fact that you don't understand why some people don't want to play FFXV even though there is a consensus that it is a 'good' game. For me, open world RPGs are such a time sink that the game has to be more than good. Xenoblade Chronicles X is also considered good by critics but I played four hours of it and haven't since. It's just not good enough for me to get invested in it. For FFXV, it had to either be great on its own or have enough of the FF nostalgia feeling to compensate for its shortcomings. Nothing I have seen so far indicate that either of these are true, though I will say it's on the border!
The FF title definitely has meaning. When I see a game with that I have certain expectations of quality and the type of experience I'm about to have. That's why SE doesn't apply the FF label to everything they make (or used to). But at the end of the day, great is great. FFXV under the Brotrip Skyrim IP would have those same expectations but then again I probably wouldn't have even been interested in it at all. It is only the FF label that has me still interested so I don't think it's unfair to hold the game to the standard I set for that label.