oh really ? So tell us one thing... with hundreds of coins (if not thousands) and most of them going up with a value that goes higher every time... tell me my friend, where is that blockchain block scarcity ?
If all coins are worth some dollars they provide the same value that Bitcoins does today. Nevertheless, some coins may be technically superior, others an obvious scam, and some maybe just equivalent clones.
But having dozens of coins to chose from, I see not BlockChain Asset scarcity and no reason to trust Bitcoin over any other coin like say Etherum, Monero, LiteCoin or even one more regulated and already mined like Ripple (XRP).
How can it be scarce when its open source, I think the wider market just doesnt understand the world outside of copyrights and legal courts and governments you are reliant on to make the world add up. BTC has the first mover advantage, its got the longest line of support. There are some old coins that have not done well because they just didnt have the development, its not a given but BTC has had consistent progression.
That proven timeline allows others to join to also align and invest in supporting standards, without a longer term blockchain they likely would not have confidence and overall crypto is worse off.
If there is some coin standard truely better then BTC then I would expect eventually it will progress to take over business and revenue but its not a given just because copies are possible, the network to support that clone and quality of the user population is not there.