I'd say it's not acceptable, it's not even inevitable, it's just obvious. You can't get that high in politics without owing lots of things to lots of different people and groups, and I doubt they'd let people who are not loyal to them that high. Maybe the first presidents had some real power, but the current system is designed to filter out quickly people who are too much of a trouble for the status quo.
I find this another reason to stay as far away from politics as possible if one wants to really change anything in this world.