I don't think you understand how this is being used as a tax loop hole. Please go read here:
https://www.propublica.org/article/lord-of-the-roths-how-tec...
This type of opportunity is NOT available for low to middle class families, never will be. It's simply being exploited by the rich. These families live paycheck to paycheck more often than not, they're not going to have the ability to invest shares of a company or real estate into their IRA. THey're more worried about paying their bills and the next paycheck. They don't have the extra income to make these kinds of investments.
No, seriously, go read the fucking article and I think you'd understand instead of very clearly advocating for the rich like you are.