Small businesses can shop off-exchange through a broker, buy directly from a...

https://oscar-wiki.win/index.php/Why_Do_Marketplace_Networks_Feel_So_Narrow_for_Small_Businesses%3F

Small businesses can shop off-exchange through a broker, buy directly from a carrier, or compare small-group plans. An HRA may be another option. Before weighing prices, check whether your doctors and nearby hospitals are in each plan’s network.