GP is repeating the PE as corporate raiders story, but leaving out that these are often struggling, mismanaged companies, and that those loans have a sophisticated counterparty. The lenders might eat the losses, but after a few rounds, they'll demand higher interest rates once they see PE's turnaround track record. This is actually an example of where markets work; it's just ugly to see a beloved band go out like this.

Commonly, the bank that undewrites the loans will essentially do the same thing - they collect a commission but sell the underlying debt to someone else as (high-yield, because they are high-risk) bonds.

If you've heard of "Junk Bonds", this is (one source) of where they come from.

It's like a financial game of "hot potato" - you can make money as long as you're not the last person to hold the debt. So the answer to "who lends the money?" is "anyone who thinks they can sell the debt to someone else before it explodes".

In the end, a lot of it goes to "unsophisticated" individual investors, who will buy it based on "Sears (or whoever) is a great company, why wouldn't I buy their bonds" without realizing the full extend of what's happening.

Banks want to keep working with PE because banks have a lot of M&A business, and PE firms are the high-dealflow clients of their M&A arm. If Elliot (to pick a vulture at random) hires you to do mergers they're going to expect you to also help with the financing.

The banks don't end up being the bag-holders in any case, because they securitize the loans.

PE firms mostly make money on the management fees they charge the company, and by stripping assets, so they're often OK if they lose money on the ownership stake. In any case, the PE principals make money from their LPs with fat fees on assets under management so even if the entire investment goes south, it's the LPs who ultimately take the hit (5-10 years later) and not the principals.

Bankers who want to secure a deal that looks good on paper. When the loan defaults it would be someone else’s problem.

Competition who benefits from stragglers being eliminated from the market ?

TLDR: you know how people will by crypto that has absolutely no backing of anything? Well these bonds at least back to the company. There's always another sucker there to unload your debt to after you make a profit in fees and interest.

Ultimately it falls on the taxpayer. The existence of the FDIC not only incentivizes but almost forces banks to be risky with their investments. It doesn’t matter if their lending fails because the government has to come in and clean it all up and those expenses are passed on to the public.