Interesting. I am told this was to make Pool more TV appealing.
Looking back at the old rules, some richness seems to have left with the changes.
The first televised tournament to use Texas Express rules was the 1982 Caesars Tahoe Classic. When Richie Florence (the promoter) told me about the new rules he would be using I argued strenuously against them. I was his TD. How can you make a ball, scratch and not put the ball back up! All balls stay down, even on a foul! One foul, BIH! I thought he was crazy.
It was all about shortening the matches (Race to Nine) for TV. We only had a one hour window, which in the 1980's meant 48 minutes of air time. As it was all of the matches that were televised (three matches) still had to be edited to fit this time frame. Earl played Mizerak in the finals and I was the stage manager for ESPN. When Earl jumped a full ball with his playing cue and ran out, that changed pool forever! He won $33,000 plus a new car valued at $15,000. A huge payday back then.
From then on we had three or four big money (25K on top or more) tournaments every year. Nothing like we see today. Progress was slow to happen in professional pool and I often thought we would never get there. Matchroom and the WPA has changed all that. A pro player can actually make a good living for the first time since I've been around. And that's a long while.