Shares on a public blockchain are going to be a thing. Real shares. Like Apple and Amazon and even Berkshire Hathaway. Not this pretend kindergarten shit we have had so far.
But Bitcoin needs a way to record and transfer these shares. Like colored coins. There are a bunch of contenders for which public blockchain will win. It will not be Ripple or Stellar. ETH is the obvious threat but they have their own problems right now.
This is inevitably going to happen in one form or another and it's why I'm pretty much a perma bull from a strictly financial perspective. Believing in it (decentralization of power) as a good cause is one thing and that's what got me interested initially. But I wouldn't be going nearly all in if I didn't believe in a very high probability of disruption in the financial markets, and I only keep what I need to sustain myself for the next 5-10 years in fiat.
I just can not see equities not moving into the crypto space within the next decade or two. Traditional brokerages are expensive, inefficient, and annoying.
And then there's venture capital, which the average pleb never had access to before Bitcorn. Kickstarter et. al. were one attempt to change up the VC scene, but they were a massive failure (from a zoomed-out perspective, I'm sure the founders are quite happy). The next wave of crowd-finance had insane fees to the website. And now ICOs cut the middle man out entirely.
So as the market matures and we start seeing some better screening and perhaps escrowed funds that get released in batches based on certain conditions (perhaps via smart contracts) we're bound to not only see an increase in financially literate people, but also an increase in businesses.
Paired with all the other stuff that is going on and coming up in the coming years we're bound to see quite a clusterfuck of interesting things springing up everywhere in a fashion that would put the last decades to shame (if one ignored the fact that they were necessary to get here in the first place).
That being said, I think there's enough space for multiple corns in the field, so I don't consider ETH or other chains as a threat, but rather as a healthy driving force of technological progress and mass adoption. At least I can't deny that the hopes of "getting rich quick by buying the next Bitcorn" didn't contribute to the increase in recent interest, and will do so in the future. Gotta be thankful for everybody who gets hooked on Bitcorn, regardless of how they got into it.