Blank Street Coffee captured the hearts of Gen Z by offering coffee and trendy matcha drinks through its speedy no frill stores the size of kiosks. But as revenue slowed for the coffee chain in the past year, it's now doing a complete strategy shift. Add more seating and opt for bigger stores to make customers stick around longer.The chain wants to curate its shop so that it becomes more of a hangout spot than a quick grab and go. A strategy that Starbucks once championed and is now trying to recapture. Bla ...