And maybe it’s not. The big mistake people make is hearing non-profit and think it means there’s a greater amount of morality. It’s the same mistake as assuming everyone who is religious is therefore more moral (worth pointing out that religions are nonprofits as well).
Most hospitals are nonprofits, yet they still make substantial profits and overcharge customers. People are still people, and still have motives; they don't suddenly become more moral when they join a non-prof board. In many ways, removing a motive that has the most direct connection to quantifiable results (profit) can actually make things worse. Anyone who has seen how nonprofits work know how dysfunctional they can be.
They don't make large profits otherwise they wouldn't be nonprofits. They do have massive revenues and will find ways to spend the money they receive or hoard it internally as much as they can. There are lots of games they can play with the money, but experiencing profits is one thing they can't do.
This is a common misunderstanding. Non-profits/501(c)(3) can and often do make profits. 7 of the 10 most profitable hospitals in the U.S. are non-profits[1]. Non-profits can't funnel profits directly back to owners, the way other corporations can (such as when dividends are distributed). But they still make profits.
But that's besides the point. Even in places that don't make profits, there are still plenty of personal interests at play.
[1] https://www.nytimes.com/2020/02/20/opinion/nonprofit-hospita...
Profit is money that ends up in the bank to be used later. Compensation is what gets spent on yachts. Anything spent on hospital supplies is an expense. This stuff matters.