> In 2015, the Maryland-based Black Bear Sports entered the scene. The company, owned by the private equity firm Blackstreet Capital, began buying up struggling ice rinks, some of which were on the verge of closing.
This is the basic strategy of private equity. Find a sector of businesses that is doing poorly, buy them up (they're motivated to sell), run them poorly for several years while collecting money, file for bankruptcy and find a new sector to take on.
If running an ice rink was good business, PE would have a hard time finding rinks to buy for prices they're willing to pay.