One factor driving the trend toward downtown and away from suburban markets is what Cushman & Wakefield calls a "reverse migration" that has large organizations moving back to downtown cores.
"There is also a desire to attract and retain the top talent that is increasingly moving in to urban centres, and increasingly looking to work, live, and play in the city," it said.
I'm not convinced that moving an office downtown will win the war for talent. What I think is irrelevant. Firms are leaving suburban Canada for the urban core. At some point, businesses remaining in the suburbs will be at a real disadvantage. Innovative workers are more vital than inexpensive real estate. Toiling in the burbs is for losers.
Go ahead and dig up the numbers. The suburbs aren't dying! Your story has already sunk.