This is cute, but the $$ just are not there.
First, of course, the throwaway line Ishbia said this move could triple audience availability to at least 2.8 million households, is, well, uninformed. The phony math is taking the number of people who had access (AKA paid for) BS-Arizona and the number of people in the DMAs involved. Of course, the people who self-selected out of paying for the NBA, don't like the NBA. The "audience" for this is, well, the same.
But more importantly, what are the ratings for the Phoenix Suns? 0.64. On the low end nationally, but none of the teams are really setting the world on fire. The NBA is not the highly regionalized and broadly based sport that MLB is. Many more people follow it on a national basis, following the national teams and players (Lakers, etc) rather than some self-appointed local team.
Lastly, of course, I agree that providing free antennas is a publicity stunt, but it outlines the problem with this. This is an unaffiliated station. Unaffiliated stations are, well, garbage. Reruns, hours of the parent station's news over and over, infomercials. Not compelling TV. Not something that can command retransmission, but rather a must-carry status. So, unlike an RSN, ONE revenue stream. Ads. Ever watch the ads on local NBA, NHL, and MLB? There is a reason it is car lots, ambulance chasers, and PSAs. It is spelled 0.64.