NYT & Bloomsberg: Index funds may soon be treated like Big Tech

I just read in the NYT “ The entire market will be held by index funds by 2030, by one estimate, and if trends continue the current concentration in the passive investment industry might manifest in the asset management sector as a whole. With [increased scrutiny of common shareholdings] in the European Union and growing wariness of the merits of scale, some suggest that index funds may soon be treated like Big Tech.”

https://www.bloomberg.com/news/features/2020-01-09/the-hidden-dangers-of-the-great-index-fund-takeover?campaign_id=4&emc=edit_dk_20201124&instance_id=24418&nl=dealbook&regi_id=72288344&segment_id=45305&te=1&user_id=068758202858404d36917ba01b108c0f

Also see:lexology.com- Common ownership: back on the regulatory agenda?

What do you think of this? How would this impact current index fund holders?