Fair point, it's a corporation taking out the loan so there's nobody to go after if the company goes under the way there is if the value of your house tanks and you stop paying your mortgage. But doesn't the bank take that risk into account when deciding whether to issue the loan? Why should that be illegal?
The way I’m reading your question, it seems like you are looking for the law to follow philosophically consistent principles.
That is simply not the case and lawmakers can make any kind of law to shape the society how we wish. If leveraged buyouts are creating problems for the country, then it’s totally valid to make them illegal in certain cases.