If you have networks fight over the TV contracts when the NFL did not have a L.A. team, which happened during the switch to FOX, NBC leaving Sunday afternoon and later regaining SNF), it shows high national interest.
Just go do a quick Google search and read all the articles of Goodell prioritizing L.A. and why.
This was a huge league initiative for years. There were many meetings with all the owners, closed-door meetings. This was a league priority...and now you're telling me that this wasn't important for the league? They only relocated because the owner wanted to? That is just factually incorrect and I feel very comfortable in stating that you simply don't understand the subject you're talking about and need to do further research.