Airlines are so stupid. They are basically going to force all the families to Southwest with free bags. Southwest needs to market the crap out of this so people know.
this will cause people to bring less garbage with them onboard which means much faster boarding times which means more money earned which means Southwest is sure to follow.
Also think about other groups that need to bring garbage. Musicians, sports teams, high school trips, etc. They are giving away group business to other airlines.
By definition when we travel, we usually want to bring something with us. Very few people fit the use case of being able to exist from just one small bag on a trip.