The comparison would be valid for those who bought BTC below 1$ and sold for ~10$. Try another comparison:
Err, if MySpace was built on HTTP/HTML and Facebook was built on something else, then you'd have a point.
If you instead were to say Facebook is to MySpace as Coinbase is to Bitpay, then maaaybe history would prove you right.
But what are the odds of "the next Facebook", or whatever, being built on something other than the web, at this point?
So slim as to be none.
And why?
Consider the following statement:
Facebook is to MySpace as X is to Bitcoin.
X doesn't exist.
Don't believe me? Well, try the contenders on for size then.
Were you thinking of Litecoin, or something? Let's try:
"Facebook is to MySpace as Litecoin is to Bitcoin." lol, nope.
Ethereum? Nope. Ripple? Nope. Dogecoin? Hah.
Ultimate future Bitcoin 2.0 project? Not likely.
Just because "X" doesn't exist doesn't mean "X" can't exist.
Maybe a Bitcoin killing X will be invented tomorrow? (Or so the thinking goes.)
Bitcoin is a revolutionary breakthrough in computer science and economics,
so another revolutionary breakthrough must be just around the corner, right?
Hmm. And maybe we'll stop using the web tomorrow, and start over?
Now consider this statement:
Facebook is to MySpace as Bitcoin is to X.
Here, X does exist.
X can be any particular industy leader in: Global Remittances, Online Payments, Online Gambling in any one of dozens of billion dollar industries.
And "Bitcoin" will often be represented by some solution delivered by some company,
like Joystream or Streamium or Coinbase or Seals 2.0 or...
any one of the hundreds of Bitcoin startups who have the potential to shake up some global market.
(But have yet to actually do so.)
Bitcoin will eat the world, it just won't happen over night. 
