True, but but the opportunity cost that comes with spending something like Bitcoin on a burger, or a pizza for that matter can be astronomical, whereas some ERC20 tokens can have valuation stops and separate clauses put in place to make them stable enough to spend. A good case study is that of the slowing economy of Japan, where due to the continually increasing value of their currency over the past 30 years people have stopped spending on high cost items leading to the issuance of negative interest rates, whereby you are charged for holding money in a bank in order to encourage spending. Why can't we shop with a specifically designed token? TenX is a good example, but Monaco perhaps ?