Why have other cable networks with informational tickers not followed suit?

ABC is clearly happy with it, and other networks may soon follow.

A network of offices across North America quickly followed.

The petition argues that while the other networks have followed the commission's regulations, Fox is ignoring them.

The major networks are following the usual counterprogramming strategy of courting women.

Not to be outdone, the other big network followed suit.

Then, even though their own polling consortium had not yet called it, other networks, fearful of being scooped, quickly followed.

Presumably the other two networks will follow suit.

Other networks who sell their shows via iTunes did not follow suit.

Without television sets to sell, rival networks followed more slowly, finally committing to 100% prime-time color programming in the 1966-67 season.