At least US pro leagues (other than MLS and racing) haven’t yet gone all in on desecrating the team uniform with ads. I can’t bring myself to buy a team jersey that’s 75% an ad for an unrelated corporation that I don’t want to support.

How long do you think it’s going to take until another broadcaster starts adding ads during injury time, or maybe other 3-5 second ads between shots?

I'm shocked they don't just scale the picture down to do side by side style commercials at the same time regardless of what was occurring during play. They do this in auto racing events. There's no need to wait for specific times and can keep with their regularly spacing of breaks.