Im not sure about this. Some people like to see how a miner can hold onto a lot of BTC like MARA, but others seem to not care that much and just want max efficiency. For a public miner, I guess whatever increases shareholders value the most is what works. Anyone has studied this?
A company keeps functioning if they are making profits, I believe that is the main goal of every business, before anything else a company will aim for making their ROI back first before they start doing other things.
Bitcoin miners, either personal or company, focus on mining Bitcoin and holding the stash through a bear market and start selling when Bitcoin is surging higher in a bull market, only beginners sell their Bitcoin right away as their miners make money every day.
For the best return it is better to keep mining and holding, as for companies, if there are workers to be paid I bet they will have no choice but to at least convert some Bitcoin back into Fiat to settle the workers or just pay them in Bitcoin if they want.