Difference is big corps sometimes get reorganized or their cash cow falls on hard times and they need to optimise or perish. They don't succeed often but the incentives are usually profit driven - politics are a luxury that big corps can afford to absorb because they are usually entrenched in some position and can afford to accumulate inefficiency.

Government on the other hand is always political as their output isn't valued in market terms but in political points.

So yeah - from my experience - big corps (especially those working with government) can be political, bureaucratic, etc. But it's standard operating procedure in government work.