Specifically? Show me how the NBA or NFL protecting their brand (by preventing counterfeiters from selling NFL branded jerseys for example) relates to someone buying an ‘official’ jersey and selling it online at a later date.
How about advertising the showing of their games? Happens every superbowl. NCAA clamping down on anything that depicts a playoff tree every March. Ever actually bothered to listen to the disclaimer that comes before games? “Any depiction, rebroadcast or transmission of this game is strictly prohibited.” None of this is new. None of it is complicated. Trademarks have to be defended, and they are. Dozens of these cases hit the news every year. And the same crowd of people whine and bitch and moan and show they just don’t know what the hell they’re talking about.