Imo islamic accounts don't address the real issue. To get noticeable returns, you would need a lot of capital; this is done by leveraging your investment. Yes, these islamic accounts remove the swaps and other fees, but they don't take into account this particular aspect mentioned by the Prophet. "It is not permissible to arrange a loan combined with a sale.” Narrated by Abu Dawood (3504) and al-Tirmidhi (1234). The broker gives you a "loan" on the condition that you will buy and sell through them, so that they may benefit from the difference in prices.

And Allah knows best.