This is a bit misleading (I don't think intentionally). While the leagues themselves are (or used to be) non-profits the individual teams are taxed just like any company. This often causes confusion when it is mentioned. Now, should they get subsidized arenas and stadiums? Dear God no.
slynnwIf you want to tax churches, why not tax the NFL, NHL, MLB, & NRA as well. Why should professional sports leagues & the weapons league be exempt from taxes.