'It's inevitable, Jim'
Legal grass will spread as fast or faster than casino gambling (2 states —> 40 states in 25 years).
Money for the legislatures to spend is hard to resist.
'It's inevitable, Jim'
The only thing slowing it down is coming up with the catchy phrase or slogan that makes it the next tax panacea that was promised by the various predecessors: liquor by the drink, pari-mutuel wagering, lotteries, etc. The real hurdle is being able to tie it to that old stand-by: It's for the children!