I think that neither I, nor anyone, should get to decide what is "excessive" profit. After 275 years, Adam Smith (of "Wealth of Nations" fame) is STILL right. Command economies have collapsed everywhere they've been tried -- to say nothing of 100 million people slaughtered because they were inconvenient to Marx's greater vision.
I shouldn't have to look under the hood of Textron's cost structure. There's too much incentive and ample opportunity for them to hide the ball. If the market clearing price of a given part includes profit above marginal cost, there is incentive for competitors to undercut the incumbents -- until regulatory restrictions stop them. Regulation is a subsidy to the incumbent, who is invested in the status quo, and is better able to absorb the cost of regulatory compliance than a challenger.