When she gets what she wants(the relationship) she slowly stops doing those things. They all do it to some extent. It's why you don't ever marry, and try not to move one in.
Men get in relationships hoping she will never change. Women get in relationships hoping she can change him. The more you commit to one, the more power you give away and more bullschit you deal with.
I just can't relate to this anymore. I've been in a relationship for over 7 years, lived with her for over 6 years and married for over 3 years. I get a BJ every single time, without ever asking. You're right about her not staying the same though, she's better than ever now. I'm committed all the way, but if anything it just fuels the passion.
Maybe it's not about making universal rules for what to do and not to do, but what type of woman to pick and not to pick. A task that is impossible as long as the myth of "all women are the same" lives on.
Some women don't deserve commitment and will abuse it in the exact way you describe when given to them, those women should be shunned. Only those who reward commitment are worth your time, but some men think these women don't even exist, lost souls.