When the LCBO was created at the end of prohibition, it was at a time when (a) the liquor distribution business was dominated by organised crime; and (b) a substantial portion of the population was opposed to the legalisation of alcohol.
.
Just like now:
.
Pot is dominated by organised crime, and a substantial portion of the population is opposed to legalisation.
.
The Globe has very recently run articles explaining why it is virtually impossible to get organised crime out of the marijuana business.
.
The private market is simply not going to achieve that objective.  On the contrary, it presents an entire new range of opportunity for organised crime to dominate the business through the traditional means of violence and intimidation.
.
You may not like the LCBO, but a regulated government agency, backed up by the police, has a lot better chance of succeeding than private businesses.
.
So that 25 years from now the marijuana business is as free from crime as the selling of alcohol.