It seems that what you are doing is very good for the development of your store, if only all stores around the world used the method you use like this it must be very easy for everyone to shop using Bitcoin when they do not carry cash, surely everyone will prosper and all shops will definitely be crowded like your shop. But in some countries there are restrictions on the use of Bitcoin that have been implemented and have their own rules that must be respected by the nation itself. So, congratulations to you for allowing everyone to shop at your store with the payment method using Bitcoin.
Shopping is very easy for everyone even without cash, you can pay with credit or debit card, online transfer, mobile banking, etc, so making shopping easy will not be a reason why people will introduce bitcoin payment option. In my opinion, merchants who make that option available are mostly bitcoin users themselves and they want to help with adoption, or merchants that notice a rise in bitcoin users around them, so they try to make their business attractive to them by accepting bitcoin.
I don't know if op's shop is 'crowded' because of bitcoin payment method, or if it is crowded at all because he provided very little information about it, there is this reluctance in bitcoin users to spend bitcoins on things they can get with fiat that is inflationary, so right now the demand for bitcoin as a payment method isn't as high as bitcoin as an asset, so i don't think a shop will experience a significant increase in their customers because they now accept bitcoin.