They kind of did as well, in round about ways. Still is in many countries just varying labels and slight tweaks to th formula.
LSD 25 itself remains illegal though.
LSD was only actually made legal in 1965-68 as a key part of the social engineering project MK ULTRA from 1962, The Beatles were another chapter, Lennon was a Satanist, Pop Music culture as well as the hippy culture and ideology itself were conjured to pacify, steer and control, Woodstock played a big part in it, and so did the strategic widespread distribution of LSD.
So it was legalised in pretence, then illegalised in pretence also.
279 ug pods in the pharmacy for any and all to buy.
Hendrix, Morrison, Beatles, etc all tripped off Pharmacy pods.
No homologes are legal in UK now, but were fully so until 2016, still are in Holland, Germany, Canada and further.
No question surely, more legsl clearnet Lysergamides have been purchased since 2012 back I imagine at least, across the globe via internet, than thise 3 years from Pharmacies all over. Surely.
And LSD use remains at a consistent collective global level too, to this day.
Regardless of availability.
However, if it WAS fully legal, in the shops, nowadays with the mountain on positive press it has earned and been awarded, I bet an extra 20% of the world would become users.
Some of this above may sound mad. I swear it is not. Satanic rock cukture, movie culture and media all related and part of the same humanity containing psyop.
To myself personally, nowadays, at this time in my life, LSD suddenly being legalised would make no real direct practical difference, except the world would be instantly a better and more interesting place to be.