You are not correct.
They can and have hired the best minds they could find to develop a comprehensive system that is essentially self insurance. Given the size of the various organizations, especially Berkshire Hathaway, the have enormous economies of scale.
They are cutting out lots of middlemen and thereby eliminating expense.
>> They can and have hired the best minds they could find <<
OK. No problem if they will avoid “experts” like Jonathan Gruber of MIT and the late Uwe Reinhart of Princeton. Those kinda guys would merely recommend a beefed-up style of “central planning” like that of the old USSR — bound to fail unless it can adopt extreme and coercive measures.
In my opinion, the only “best mind” they need to consult is the late Milton Friedman. He had it all figured out. Just implement a thorough-going system of medical savings accounts, allow the sale of insurance across state lines, limit damage-suit awards, and bingo — we’ll soon make the American health care industry great again.
More importantly, if this leads to onsite "company hospitals" for employees only, they completely overturn the demographics that destroy affordable healthcare for the masses-- e.g. no illegals, no homeless, no druggies, prostitutes, deviants, etc. If ordinary doctors, insurers, and hospitals could restrict care to employed, reliable citizens we wouldn't have a problem in the first place.
Insurance is not healthcare