if Angers wins this game then the oddsmakers will have made a lot of people win a lot of money and it would be like winning the lottery and I sincerely doubt the Angers have any chance of winning this game. the odds speak for themselves, I haven't done the analysis for this game yet because I don't see any advantage in betting on games with very low odds but just seeing this odd so low in case PSG wins I'm already convinced that PSG will win this game, of course that there are times when teams with very low odds that are taken as favorites lose games, but these are rare cases
I guess whenever PSG ends up losing in the league, that is a great time for the sportsbooks to be fair. They always give them a good amount of odds and the other side is rarely ever good and Angers probably do not get that much betters neither. In this case I would assume that sportsbooks would be the one that make the most profit if PSG loses, or if a draw happens in which case it will be even rarer.
Most people wager on PSG, and by a big margin as well, like 70%+ people wager on PSG most probably, a case could be made for as high as 90%+ as well. This is why only "few" people would be richer if Angers wins, whereas it is a bigger profit for the sportsbooks.