True Blue
You made some valid points. Yet, the FACT remains that many of us , from the non-UK regions, who are forced to connect through Gatwick (because we have no Heathrow service), would very much like Heathrow to expand & offer us a service because, there are precious few non-stop flights to places in USA, Canada, Asia, Africa & Australasia to connect with through Gatwick. Nor are there ever likely to be!
Oh yes, & to connect with flights to these areas we have to make a time consuming trip to & from Heathrow by coach-&, often, have to make a night-stop at Heathrow.
Another FACT is that the carriers which did operate to these places from Gatwick abandoned it for Heathrow at the first available opportunity !