As shown in practice by adoption of credit cards and other financial products, people (well, most of them - the 'buyers') for most of their daily business do not want irrevocable transactions like bitcoin provides, but transactions that are reversible and can be controlled by legal authorities.
Because fraud matters. Because consumer protection for all kinds of non-delivery, mis-delivery or simple misunderstandings is actually more important for everyday purchases than all the advantages of an independent cryptocurrency. And of course, widespread availability, liquidity and value stability are just non-optional table stakes.
Bitcoin on its own is not competitive as a replacement for the full payment infrastructure. Bitcoin together with a widespread trusted escrow system, reputation system and a (currently unavailable) legal framework could fit the role, but in that "Bitcoin++" the missing parts are larger and more complex than the Bitcoin core implementation.
Because fraud matters. Because consumer protection for all kinds of non-delivery, mis-delivery or simple misunderstandings is actually more important for everyday purchases than all the advantages of an independent cryptocurrency. And of course, widespread availability, liquidity and value stability are just non-optional table stakes.
Bitcoin on its own is not competitive as a replacement for the full payment infrastructure. Bitcoin together with a widespread trusted escrow system, reputation system and a (currently unavailable) legal framework could fit the role, but in that "Bitcoin++" the missing parts are larger and more complex than the Bitcoin core implementation.