re: Why are 401k platforms so far behind other retirement plans?

I am finally adding the brokerage link to our company's 401k plan after years of lobbying and asking our 3rd party advisor to add more funds. The only answer I ever received about not having more funds is that we "already offer a funds for each style. It didn't matter if funds were on a watch list for underperforming according to their BS scorecard system, I had to start tracking them on my own and finally had enough data to question/show them that the funds they were cycling us in and out of were not good funds. In general, they are lazy imo and don't want more funds to research and thus track.