Is it that hard to believe? If you make the best X in your market, it's gonna be the most popular. 70% market share isn't so abnormal. If you're digging for go

Is it that hard to believe? If you make the best X in your market, it's gonna be the most popular. 70% market share isn't so abnormal. If you're digging for gold and there are 5 different shovels you can buy, but 1 is clearly the best, is it that hard to believe that 70% of all shovels in use will be that best one?