That's basically how you climb the corporate ladder in the office once you reach a certain threshold. If you think you'll one day be the multi millionaire CEO with nothing but integrity, work ethic and playing fair and by the rules, you're just kidding yourself.
Hate to say it, but I agree.
I won't say it requires "backstabbing", but your typical work will not be what gets you far.
It's kissing the right asses, taking credit for the correct things, writing enough bullshit on your yearly evaluations, finding the right exploits, etc.. etc... Part of it is simply finding opportunities.
By all means, you can make it up to manager on work alone when working at Pizza Hut, but that's not going to get you a white collar high rank position.