i fully apreciate your right to an opinion, no matter how wrong you might be
(Gets Trailmonkey in my office, talks for 20 mins, decides I was right… 😉 )
See, the current Barca and Real teams have between them helped create the current World and Yerpean Champion Spanish side, possibly with more of a Barça influence.
As for ‘innovation’; those teams you mention merely developed the game as it was, as have Barca. All incremental steps; not as though suddenly rule changes allowed them to play a completely different way than was ever allowed before.
The speed of the game has increased in the time I’ve been watching footy, some 30+ years. The finesse and agility of some players today surpasses just about anything seen before. The physical strength and ability of modern players at top level is way above what it was previously. Plus the balls have changed in their construction, the quality of pitches has improved (remember the mud baths you used to see?), so you simply can’t compare then with now.
One thing hasn’t changed, and that’s the game’s appeal. Will always be the number one sport.