That’s not how capitalism works. If the tobacco industry could raise prices and get more money today, they would. Since they haven’t, you have to assume that any increased taxes or burden on them will reduce their profits.
Yes, it might increase prices to the end consumer, because the demand curve will change when the costs change. But that doesn’t mean the tobacco industry is making any more money. If it did, they would already charge more.
No, there still is. Trans men suffer from all of the same patriarchal oppression that cis men suffer from. The loneliness, the isolation, the expectation that they have no emotion. If you somehow watch trans people TikTok, The men’s biggest complaint is that they now have no friends.
So yes, the patriarchy exists even if gender is a construct. Because one of those constructed genders oppresses the others, and themselves.