The regulatory bodies believe that the all-in cost of retirement is too high. Anytime there is an opportunity to assess fines on fees, they're doing it.
The long-term push to bring the cost of retirement fees down has most definitely resulted in the opposite in the short term.
SEC, Finra targeting high-fee share classes, 12b-1 fees and failure to give sales load discounts and waivers to investors.
Long term strategic shifts in fees arrived with the “Clean Share” classes