Ether is magical fairy dust, and that's exactly what you're getting for your BTC. An unknown quantity, of unknown supply and of unknown value.
- "An unknown quantity" - wrong, you know the exact quantity when buying
- "unknown supply" - correct, but supply will be known when IPO ends, model of supply is pretty clear
- "unknown value" - at this moment there's a fixed price in BTC. Yes, you don't know what the value will be at launch, but you also don't know what will be the value of BTC or any other altcoin (or... anything) on then.
Riddle me this. If Ethereum is part PoW then what exactly is being PoWed?
There you go. He's right in that there's an infinite quantity of Ethereum and you know how fickle many coins can be if there's inflation (especially inflation through an infinite supply of a coin).
By the way a big IPO is often a discouragement at best. Anyone who wants Ethereum has already bought it - so who exactly is going to come in after launch to acquire it?
You should be building the userbase before you build the capitalization, not the other way around, but not like Vitalik cares as Ethereum was always a Goldman Sachs' operation to make a few bucks overnight.