A CEO who built or run an actual value-adding business (e.g Flexport) probably has more integrity, intelligence and aptitude than the average lawyer-who-seeks-politics who very often turn out to be snakes.
The government is not a business, but people can adapt, learn and re-purpose their skills. I think that the key, mistaken, assumption that you're making in your pushback is that general competence does not exist: people who are good at business are hyper-specialised for that environment and their skills will not carry over to governance. I think some people are really good at very general, cross-domain skills and should be put in positions to use their skills effectively.
Skills yes, but not their worldview. The fundamental duty of government to provide for its people compared to business' insatiable need for profit makes them incompatible.
There is no way for a food stamp program to generate a profit - that's entirely opposite from the point of it! Closer to home, you can tell when corners are getting cut for budget reasons that are penny-wise and pound foolish in a department at a businesses that treats departments that don't generate profit as a cost center, eg the IT department.
Businesses also have the luxury of firing poor workers. Government has no such luxury with their poor.
After four years of Trump, I know where you're coming from. But you're projecting the moral and ethical values of one person to millions of people.
Here's the thing - I've run startups that had a strong business, and those that haven't. While I would believe that my fundamental values never changed, I can tell you that I was far more tested in situations when we were running out of money than when we had 8 figures in our bank account. For example, how do you design a paid leave policy? With 8 figures in the bank, you really have to be a psychopath not to leaning on the generous side. But when you don't know if you can do the next payroll and the financial security of 100 people hinges on you hitting the next month's target... and then someone tells you about a family member who just passed away... Sometimes there are no good solutions, and you want to avoid getting yourself in those situations. So ironically, a hard-hitting CEO can sometimes lead to a better paid leave policy than a startup run by the most empathetic social worker in the world.