I respect your desire for more money in exchange for more commitment, but we should also recognize that money is but one of many motivators, all of which are ultimately in the service of increasing personal satisfaction.
The only kind of benefits any job can have is subjective "personal satisfaction". The degree to which any particular objective result of employment (e.g., material gain) is an important factor in producing personal satisfaction, of course, varies from person to person.
I could have gone academic, in fact I could toss it all away and go academic right now. However ... I would never voluntarily make my wife and kids suffer like that. Maybe after I retire it would be safe to go academic.
It boils down to you might be able to fire me up enough to eat ramen and live in a cardboard box because of topic X, but I'd have a hard time looking my kids in the eye and telling them they'll never eat anything better than ramen because dad likes topic X more than them.
That's the screwed up nature of the system. "Everyone knows you HAVE to take a vow of poverty and give up your private life to advance science". Oh really, and why is that? Why isn't it "Everyone knows you HAVE to take a vow of poverty and give up your private life to stamp license plates, but if you wanna be rich go into academia..."
You might have selection bias. All the pro athletes I know of, appear to be financially healthy. That doesn't mean pro basketball is a great plan for kids, given the evidence that 99.99% of kids who want to be pro basketball players end up doing something else, something much less profitable than NBA star... I would theorize this is directly analogous to going into academics.
The winners win. Turns out that winning is, in fact, pretty fun. The losers, well..., that's most of the them, but we're not going to talk about them.
Where did you get the magic number 7 from?
I don't know... If I spend up to 7 years of my life studying and researching my ass off to become one of the foremost experts in a specialized field, then it better have more benefits than just personal satisfaction.
A fantastic job with good living arrangements do not require a Ph.D.