Why did they stop touring? That is a negative imo. I heard it was the monitors or screaming fans. Other bands of the later Beatles era like the Stones, the Who, Hendrix, Zeppelin figured it out. A band like Zeppelin were so much better live than on some the recordings. For whatever the reason, and not sure who is doing it, Jimmy Page possibly, a lot of their live shows are showing up online full soundboard recordings too. Like the Royal Albert Hall show in 1970, Texas Speedway 1970, and the 4 CD Earl's Court Shows in 1975. Amazing live performances all fully professional recorded. I have them all.