And can those businesses currently take a loan to pay for the owner holidays or whatever?

I do not see in the article where it says the loan has to be used for personal expenses. In fact from what I can tell it just says unrealized gains will be taxed regardless of whether a loan is taken out or not. The loan example is just used as a justification.

You're the one who was talking about loans!

In response to "If one uses an asset as collateral for a loan" you wrote "So small business can't take out loans unless they can realize and be taxed on the full valuation of their company".

I was responding to the parent who also made no distinction that the loan was solely for personal purposes.

The comment was about using assets as collateral for loans. Your response was about something else - or maybe it was not about anything, I'm not sure.

A company can also get asset-backed loans using as collateral something the company owns - or it can get a completely different kind of loan where there is no specific asset used as guarantee.