The Stock markets are being controlled by a bunch of old school economists with old money that was passed on for centuries. They have perfected the art to manipulate the markets with very clever investment tools. Do you really want these people to determine the destiny of Crypto currencies in the future?
Most stock markets are due for a massive correction, so linking Crypto currencies with these stocks now, will be stupid.
..Let them ruin the Fiat system and leave Crypto currencies for the new money.
When the end of the fiat system gets closer it is very likely that those people that control a great deal of wealth will try to to get control of bitcoin, one basic rule is that all of those that are powerful are only looking for one thing and that is to become even more powerful, fortunately for us the bitcoin whales are not so dumb to exchange their bitcoin for fiat since they now bitcoin is the future.