You can buy however much BTC you want. You can buy fractions of a coin. The real issue is flight from phony paper money and engaging in anonymous transactions.
Only, it's not anonymous. "Here, online merchant, are some Bitcoins. Mail the goods to this [my home] address."
Suuuuuper anonymous transaction

And then stored on the digital records of these merchants is "ABC [with their home address] paid X number of Bitcoins for Good Z"
Furthermore, Bitcoin offers
pseudonymity not anonymity. This is the critical issue with Bitcoin enthusiasts. They fundamentally don't embrace the fundamentals. Bitcoin is
too expensive to use everyday, it takes
too long to process a transaction, and too many embrace the falsehood that Bitcoin is "anonymous". It isn't.
Bitcoin is a social network, not a currency. Bitcoin enthusiasts are confusing the fact that Bitcoin is going up with validation that, "A-HAH! It's a CURRENCY!" People aren't buying Bitcoin because they're using it as a currency. They're buying it because it's going up, and because the ICO market is bubbly. That's analogous to buying a house because home prices are going up---not because you're actually going to live in the house. What's the point of a digital currency if you never use it to buy stuff?
Sounds like, from these debates, the Bitcoinists buy and hold Bitcoin with no intention of selling (why pay high transaction fees for a coffee and wait an hour for the transaction to process, especially when Bitcoin is going to be worth
$500,000?" So Bitcoinists aren't even using Bitcoin as a currency but as a speculative instrument. Similar to the bubble parable surrounding "trading sardines". "These sardines aren't meant for eating---they're
TRADING sardines"