I think its with the electorate. A large proportion of the voters (but not necessarily a majority) has been indoctrinated with the idea that a track record in business is automatically a guarantee of success as a statesman. It isn't. What businessmen do is different from what politicians do. The two are not equivalent. They are necessarily adversarial.

Now, businessmen may have skills which are useful for politicians, like being able to manage large organizations. For that matter, so do military men, they also lead hierarchical organizations with complex chains of command. But these are necessary conditions, not sufficient ones. Good soldiers can make lousy leaders too. Washington and Eisenhower were exceptions, think of U.S. Grant.

Trump was elected because enough people were convinced that businessmen were naturally competent and virtuous, while politicians were necessarily clueless and corrupt. Both of these conditions may indeed hold occasionally, but NOT NECESSARILY, and certainly not all the time. And the fact that these views of business and government became established enough to sway an national election is not the result of a profound insight suddenly dawning on the American people, it is the result of a long and clever campaign to convince them of that and indoctrinate them into a specific political philosophy; one whose essential core message is "We know what we're doing, leave us alone and everything will turn out out just dandy." That's a message Americans have rightly been suspicious of when it came from their elected leaders, but which they fail to exercise sufficient caution to when its spoken by their bosses. I guess its because we've all been indoctrinated into thinking someday we can all be bosses too, if we just work hard, keep our nose clean, wait our turn and vote Conservative.

"Government is too big" is just another way of saying "Business isn't big enough". Remember, there are ways you can get rid of a government you don't like; you can vote them out of office, you can protest and demonstrate peacefully, you can vote in new laws or amend the Constitution, you can vote for politicians who feel like you do or you can start a general strike or an armed rebellion if all else fails. You can't do that with business. The only way you can fight them is by not buying their products or quitting your job.