It's called "leveraged buyiut"...
... and it's how many companies were hampered - or even destroyed - to let a few Wall Street shark make easy money without risking their own - and why many banks became saddled with "non performing loans", and derivatives to offload the risky loans to someone else.
With low interest rates, they are even more appealing - and then often they lead to "zombie" companies, companies with so much debt they stay afloat only because the interests are low, but all the money has to be used to pay debt so little is left to grow or innovate
IMHO, leveraged buyouts should be banned because they make very little business sense, especiially beyond a certain ratio.