Nobody cares about the banks. But the banks are going after Toys R Us (and other targets of the parasitic buyouts) because that's their only recourse, and they are costing plenty of innocent people their jobs. I feel things would be different if they could go directly after Bain et al.
Yeah no. If the stores were worth keeping open without the debt, then the bankruptcy court would keep them open. They lost money in each of the last 4 years, without as much of a debt load maybe they'd have broken even or a small profit, but not enough to justify the existence of the company.
Toys r US's numbers were significantly below where they'd need to be at to survive. It's unclear why you think we should infringe on banks ability to decide who to lend money to and what collateral to require.