Here's The Star's Christopher Hume ranting about retailers. hmm - make them build up and insult them at the same time.
Christopher Hume's idea to require retailers to build may have merit. However, he seems not to have noticed that retailers are already building up. All Ikea stores are two stories. The new Canadian Tire at Leslie and Lakeshore is two stories. In addition, warehouse stores such as Home Depot use the space above the retail floor to store goods - which eliminates the need for a separate footprint for warehouse space.
Hume closing rhetoric is uncalled for. Most cities grew out of market places. In Ancient Greek cities, the agora- the trading and meeting place - was foundational to what became cities and city states. The agorai were open air - in essence a zero-story buildings!
Urbanity is based on the trading of goods and services. Instead of ranting against retailers, Hume should head back to school for a refresher course on architectural history.