Dramatic week for Sam Altman and OpenAI, Canada's most livable cities and surging rents: Business and investing news for November 26

Open this photo in gallery: The Globe and Mail's inaugural ranking of the most livable cities in Canada looks at economy, safety and, yes, the cost of housing.Illustration by Kathleen Fu Getting caught up on a week that got away? Here's your weekly digest of the Globe's most essential business and investing stories, with insights and analysis from the pros, stock tips, portfolio strategies and more. The 100 most livable cities in Canada The Globe and Mail released its inaugural ranking of Canada's 100 most livable cities, placing emphasis on key attributes that most Canadians value in their communities including…