And that would be good in two points. People will sell less on short term, because the cost of selling will be higher. So stocks will be held longer, which will diminish volatility even more and improve the situation for small investors. What disadvantage will it have for the 99%? I see none.
Increasing the bid/ask spread will increase volatility, rather than decrease it. With a low spread, if you think the prices are going to rise tomorrow, a lot of people will buy today, thus smoothing out tomorrows peak.
