How do I imagine the future of cryptocurrencies?

Do not judge strictly. This is just my idea of ​​the future.

One purse in which there will be all existing crypto-currencies. The wallet will also be decentralized.

Is there something similar that can organize steemit?

For example:

You log into your account on steemconnect and in front of you, your wallet, which is protected not worse than any other crypto currency. Wallet is universal.

It does not matter what they want me to send - bitkoyn or some unknown currency. The purse is universal, it "accepts" all coins. It's much easier and safer. If necessary, you can add additional protection to a separate crypto currency.
If they create something similar, then the integration of the crypto currency into the everyday life of an ordinary person will occur.

Companies switch to blockchain. This already seems like a more realistic idea.

Instead of the ordinary stock market, will there be a decentralized share market? I have already met companies that work in the agricultural industry, and this does not prevent the release of their own digital assets based on blockchain.