In the future, stocks will likely be traded on blockchains as tokens.
If you have 100 shares of Apple Stock in a blockchain wallet as tokens, and you can freely transfer those tokens like digital money, what affect could this have, if any, on bitcoin?
You could literally walk around and pay for everything with Apple stock.
For greater stability, you could use a stock index fund as your digital money.
Back in the day, all money was backed by gold to give it intrinsic value.
What if in the future, all money was backed by stock index shares, thereby giving it intrinsic value and (relative) stability?
Instead of using dollars that have inflation, all money would provide return on investment in proportion to stock market growth.
And if you can use digital tokens that have intrinsic value, does it make sense on a philosophical level, to use a token with no intrinsic value?
What you are suggesting is a world that is hyper connected and where everything could be used as a currency, it is not a bad future but it is going to take a lot of time before we reach anything close to what you are suggesting, I do not think we are going to reach that point where a business can accept hundreds of coins, at best we are going to see a business accepting bitcoin and some additional cryptocurrencies.
..Let them ruin the Fiat system and leave Crypto currencies for the new money. 
