Comment by Mahn

That's because Bitcoin is still today too cumbersome to be used for anything other than speculation and drugs. No one goes to the grocery store thinking "gosh, I sure wish I could transfer some money to an exchange, buy some BTC, set up a wallet, transfer the BTC, wait for confirmations, scan a QR code to pay, and wait for confirmations again to pay for my groceries". The only people that want this are early early adopters with a large stash that cannot be made liquid easily, but otherwise adoption doesn't seem to be going anywhere besides the existing use cases.