Allen Sills, the NFL's chief medical doctor, pointed to two reasons why a regular season bubble wouldn't be in the league's best interest. First, the risk of infection still remains with service workers coming and going. Secondly, Sills pointed to the mental and emotional toll of being in a bubble for months. Thousands of players and staffers being away from their families for the holidays may not be best for them.
The league isn't ruling out keeping players in hotels for the playoffs as long as their team remains alive. The playoffs take place after the holidays. But the start of the playoffs isn't set in stone as the league isn't ruling out using a "Week 18." As the season goes on, the league loses flexibility to make changes.