I'm not sure that if marijuana was legalized there would be McDope's... Remember there are people out there who still believe that it is an evil thing and it is an immoral drug. Just because the lawmakers legalize it doesn't mean all of a sudden all of society will be wanting a hit of weed inthe morning instead of their double espresso...
I am all for the decriminalization and legalization of marijuana, and think it will be regulated very strictly if legalized. Phishhead is a medical patient, and where he goes he describes as a very mellow, chill place where you get to spend time picking out your weed - and there is low grade, and "5 star" weed you can choose from (all different levels). You can smell it, look at it under a light and pick which bag you want out of the lot. They also sell herb foods like brownies and cookies, and seeds, clones, etc. The people there are all patients themselves so they're very nice and laid-back. I don't have a caregiver's card at the moment so I can't go in - but he always takes forever because he ends up striking conversations with other patients and/or the employees there.
It's DEFINITELY not run like a fast food joint or a yuppie bar. But who knows, it could be the future, but not for a long time. I think marijuana is a little different from beer, food or specialty coffee in that it isn't something I see becoming a "trendy" thing amongst yuppies.
Besides how long did it take for these trendy yuppie-like microbreweries to pop up since the Prohibition was lifted in the early 1900s? Decades. So I don't think we have much to worry about.
If anything, I think we'd see coffee shops like the Bullhead in Downtown Oakland sprout up, OK maybe "yuppie" types would go there but you can't say Marijuana is only for a certain type of person!

I don't think the current Senate will do much to push forward in this struggle.
Can't hurt to try though!
