Surely Heathrow Airport still have a duty to properly advertise all of the services that serve their Airport whether or not they operate them.
They don't really; Heathrow Airport is a private company and can advertise its own private railway link if it prefers to. Even so, they do advertise the existence of all the competitors:
http://www.heathrow.com/transport-and-directions
It is an absolute disgrace that such a huge major International Airport (the largest in the UK and possibly one of the largest in the world) so poorly advertises all of their other cheaper options and continues to mislead and scam passengers.
Nonsense. How many international airports have you visited overseas?
How many flights have you taken?
If Heathrow Airport want a third runway and a sixth terminal then they really need to improve their public transport and promote and advertise their cheaper Heathrow Connect and Piccadilly Line options so that people don't continue to get misled and scammed in to using the Heathrow Express services. I really hope that when Crossrail starts it gets properly promoted and not hidden like the Heathrow Connect and Piccadilly Line currently are.
Yeah, we get it. You don't like the HEx because it's expensive.
You're right. It is expensive. I use it around 50% of the time, depending on a number of factors. If I have a long haul business or first class flight to catch (or have just got off one) then I don't want to be arriving dishevelled on the Tube.
Heathrow has excellent transport links. There are buses, taxis, a direct link to a motorway, a private express rail link, a stopping service, a Tube, National Express coaches, numerous car parks, limo/shuttle options, etc, etc.
Your posts smack of a lack of experience in what travelling to and from airports is like, as well as a lack of appreciation that companies might wish to give prominence, you know, to their own products!
People are not being scammed into taking Heathrow Express. It is quite clear at Heathrow that there's a perfectly good Tube service, as well as buses, and all the other options.
Most travellers I know research their options well and make a cost/benefit analysis.
You're looking for a problem that doesn't exist, you're digging your hole deeper, you're unfairly accusing Heathrow of "scamming" people, and you've just lost any scrap of credibility you had.