Dish DBS, the parent of Dish Network, has filed for Chapter 11 bankruptcy protection and is winding down its Dish Wireless business. The move follows regulatory pressure from the FCC that the company said hindered its 5G buildout and forced it to sell wireless spectrum to AT&T and SpaceX at a low price, though the transactions have not closed as planned. Dish DBS said it could not repay $2 billion of senior secured notes maturing July 1 as a result. The filing does not include Dish Network, Sling TV or Hughes, which are continuing to operate normally.