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?
Stocks could not possibly be traded in the form of blockchain tokens. Stocks exchange have a very strict regulations compared to crypto exchanges who are just starting in business. If those regulations will be also applied to crypto exchanges then those exchanges will die due to high taxes being imposed by the government. The moment a government treats cryptocurrency as stocks and will apply the same fees as those with the stocks exchange then all of the crypto exchange will shutdown.