The diffusion $($or adoption$)$ or radio by professional baseball teams was largely slowed down by fear of what?

The diffusion $($or adoption$)$ or radio by professional baseball teams was largely slowed down by fear of what?

Radio would diminish the regional dominance of large market teams while benefiting the smaller clubs

Radio was dedicated to "non$-$profit"" causes and baseball owners were not willing to remove their for$-$profit designations.

Radio would crimp attendance and impact team's bottom line revenue

Radio required substantial up$-$front costs by baseball teams that most owners could not afford