I think the only reason it's discussed is that it's a deceptive business model.
It does do good for west end businesses and people have a great time going, that's not in question. But taking advantage of judgement impaired clientele and organizing ahead of time with bars to charge unsuspecting customers more than the next guy is why this is being discussed. Just like your hired shuttle/taxi driver/friend- wouldn't you want and trust that person to look out for your best interests?
Maybe a more honest business model would be to call it a "West End Pub Crawl Excursion" and just charge $20 per head. Let people enjoy happy hours and enjoy the normal prices.