If the money is not used for other needs such as mobilization costs and other needs required for the company, he can invest the money in Bitcoin. As we know, Bitcoin is growing and the price will continue to increase, after the Halving it is predicted that there will be a big spike in the Bitcoin market. It's not wrong if you advise your friend to invest the money in Bitcoin, but it must be underlined, he needs to use a wallet that can be controlled by a private key to store these assets. He can also introduce Bitcoin to all employees who work in his company by implementing salary payments in Bitcoin.

However, before going too far, you must first give him an understanding that Bitcoin is not always profitable, the Bitcoin market which continues to fluctuate can cause the value of the asset to decrease when the Bitcoin price is traded below the price he invested. This literacy really needs to be done so that he doesn't blame you when the value of his assets continues to decrease.