Could a patch/adapter allowing ps3/360 sticks on ps4/xb1 systems be the determining factor?

Could a patch, or an officially licensed adapter, allowing ps3/360 sticks on ps4/xb1 systems be the determining factor on which system you decide to buy in the future? I understand the requirement to upgrade to a dualshock 4, but shelling out another 200 USD on the same stick & button layout seems ridiculous.