Depending on who you ask, San Antonio’s craft-brewing scene is in the middle of a beerpocalypse with not enough people supporting their local brands or it’s becoming a mature market with a mix of successes and failures akin to the restaurant industry. The city’s two largest breweries, Alamo Beer Co. and Freetail Brewing Co., rely heavily on sales to bars, restaurants and retail stores — and both are for now up for sale or looking at restructuring to stay alive. Scrappy Black Laboratory Brewing Co. also is shopping its assets after a switch in focus from beer to hard seltzers wasn’t enough to move the needle on sales.