Many say that the Cornwall and other downtown malls in North America have ruined downtowns, in particular street level retail.
Commencing in the early 1970s, Ontario's provincial government poured millions of dollars over the course of a decade into the ODRP program in order to revitalize the downtown retail areas of smaller communities throughout the Province. Typically, this involved the construction of new downtown malls to compete with growing suburban shopping opportunities.
However, there was no business case or market analysis to justify the construction of these downtown malls. Typically, this involved the construction of new downtown malls to compete with growing suburban shopping opportunities. Many residents noted that the enclosed facilities represented the antithesis to the one unique aspect of downtown shopping: street-related stores.[2]
http://en.wikipedia.org/wiki/Eaton_Centre#Ontario_Downtown_Renewal_Programme_.28ODRP.29
http://www.theglobeandmail.com/report-on...d-canadian-shopping-mall/article1873460/