LN hubs, to be effective, have to be very big hubs with a lot of little customers connected to them with their small channels.  In other words, banking nodes with a lot of capital to use as collateral on their customers' links, and inter-bank links.  Big financial groups.  

In the LN you have a huge economy of scale if you can put in a lot of collateral.  

In fact, the LN will centralize even faster than the proof of work because the economies of scale are more important.