Because i think this is usage of Bitcoin debit card
high fee than normal debit card / credit card
In normal user view, it is no different between these card.(exclude some traveler and multi-national company)
So many bank wouldn't sell it, it wasting their time.
and the Bitcoin company wouldn't sell it normal use, the market is too little

As,i know, ANX intl, bitpay, coinbase are doing these project....but it so far alway to be normal debit card.