That is what is required for a currency to replace the current status-quo, and Bitcoin and other blockchain-based cryptocurrencies can't do it, and they can't even get close.
Fully agreed! Bitcoin is not built to handle mass transactions. It simply cannot handle the volume. From the practical view point, Bitcoin is a bad currency as a payment method. It cannot scale to the level to compete with traditional payment methods.
But Bitcoin is a great investment asset. That's why people save more Bitcoins than spending it. Because the potential of price increase in Bitcoin is second to none.