I understand that to an extent, but the question remains as to why he is still doing what he is doing.

I believe that Justin bought Steemit with little understanding beyond the fact that with the deal he would basically be in control of the blockchain. The Tron people didn't come up with the idea of a token swap by themselves. I also believe that the softfork changed his plans a little and forced him to learn the Steem blockchain. So even though the community is now somewhat fractured (I would say the overwhelming majority are supporting hive in some form), I think the soft fork saved Steem and laid the groundwork for Hive.

I do hope that non-Justin worshipping witnesses gain power and move to limit his ability to be the single controller of the blockchain, possibly by convincing him that it is a bad idea.

In the end, I think having direct competition will be beneficial for both chains. My focus will be with Hive as I believe that will yield a better experience in time.