I thiink you're trying to sound profound here, but you fail miserably.
In the late 1960s in baseball, pitchers were completely dominating hitters. Nobody could get a hit. 1968 was the worst year ever, and so major league baseball decided something needed to be done. What had been happening wass there was no regulations on the height of the pitcher's mound; pitchers ealized that a higher mound gave them a great advantage, and so mounds started to become really hiigh.
The major league recognized (a) that games with no scoring are bad for fans, and also that (b) there is supposed to be that goes into winning a baseball game than simply being able to throw a hard fastball. What about hitting? What about baserunning? What about fielding? Well all of those were irrelevant because nobody could get a hit.
So baseball put restrictions on the height of the pitchers mound. In some cases this brought existing pitcher's mounds down 10 inches. This made it much easier for batters, which allowed the skill of hitting a baseball to again e demonstrated, which allowed the skill of fielding a baseball to be demonstrated, and which allowed the skill fo runnign the bases to be demonstrated. And the games nwo all of a sudden had scoring.
With that one simple rule change, baseball become a better, more fan friendly prodcut that wasn't simply domonated by a guy who came out of the womb with a golden arm.
In tennis, racquet technology advanced early. And string technology didn't catch up until 20 years later. String technology has of course helped service returners. The power of the racquets helped servers. And so because of technological advances out of anybody's control, guys who could do one thing and one thing alone were able to becomem elite tennis pllayers.
Nobody realized that string technology was on its way. If they had known that, then there probably wouldn't have been any measures takent to slow down the courts. And I submit that the slowing down of the tennis courts is highly highly highly exagerrated and the increase in longer rallies is more due to string technology which allows for more serve returns to be put into play, whch means that more rallies are started.
Tennis si better as a rsult. The goold ole days of 1994 actually sucked.