We aren't talking about attitudes, though. We're talking about business practices that are designed to take pay out of musician's pockets without looking like they're taking our pay and devaluing our work.
I play plenty of places that do this; it's quite a normal way of doing business now and they do this because it's cheaper for them to avoid paying a full wage to the musicians. That doesn't mean they're running around with open hostility toward the players, that's kind of a silly notion.
I accept it because it's part of how things are done nowadays, and I get that what I do isn't valued now in the same way it was 40 years ago by anyone, including half the people on this forum. That doesn't mean I'll pretend this isn't exactly what it is. I watched it happen.
But if the profit margin on one drink is going to matter to that venue so much that I'm doing them a favor by playing for cheap because they are "struggling," then I'm going to suggest they do a better job of promoting themselves.
Edited to add: I'm also not playing there again if they're going to make a fuss over that level of loss. Anyplace that's struggling to that degree stands a fair chance of insolvency, which means next time I may not get paid at all.