Asking "Source?" on a topic where some prerequisite knowledge should be required is a lazy Reddit tactic. But here, since it took me 30 seconds to find:
There's other sources too covering different timeframes. It's all information in the public sphere. Stats Canada for example tracks a ton of stats about various businesses.
Come on, this is a startup news board... Failure rate of startups is 90%, restaurants 60%. Both well known facts. You can verify in 2 minutes on Google.
https://www.forbes.com/sites/modeledbehavior/2017/01/29/no-m...
There's other sources too covering different timeframes. It's all information in the public sphere. Stats Canada for example tracks a ton of stats about various businesses.