"The Municipal Act and Vancouver Charter allow
municipalities to effectively prohibit the sale of sex toys
in their jurisdiction. Typically a municipality uses this
power to define the sale of sex toys as 'adult entertainment'
and then to confine that business to a zone where there is no
land available for rent or purchase - a de facto prohibition.
The result is that pre-existing sex stores, which are almost
always seedy and intimidating and purveying mainly mass
market pornography, have a monopoly on the sale of sex toys.
BC law effectively prevents the establishment of wholesome,
woman-friendly, sex-positive businesses that sell sex toys.
By protecting only seedy style sex stores, BC law helps
stigmatize the erotic products industry." -- from the
[BC]
Sex Party platform
(Note that this is, as far as I can tell, actually a
pretty widespread tactic in the US as well as CA, so you
can substitute plenty of other places for the geographical
references in this passage (after looking up the name of
the local zoning law, of course).)