An investor bases his investment decision on the return and the risk in an asset. I think that in Bitcoin the return is more but there is a bit of risk as well. ON the other hand, in stocks, there is return and risk as well as the default rises so it makes Bitcoin a good asset to invest in.
There are stocks that are pretty risky to trade in. There are stocks that are being day traded and heavily manipulated but have no company backing them which is obviously a type of fraud and the reason why SEC and its equivalent in other countries have to step in. The risk is always there in every speculative market out there and the person who is putting in their money need to decide what is good for them. Sometimes diversifying is also a good choice.
Still this being a bitcoin forum, I expect to see more support to bitcoin than traditional markets.