In message , at 22:16:22 on Sun, 3 Nov 2019,
Recliner remarked:

It's not just tourists and Heathrow workers who have to get to the airport:
plenty of British travellers and savvy foreign travellers use the airport
too. Any of them who have been HEx users will switch to Crossrail when it's
fully open, and not just because it's cheaper. That won't leave enough
premium payers on HEx to keep it viable.

It'll leave all the first-time visitors, which will probably be the
majority. Plus all the less confident ones who inherently distrust
foreign commuter services rather than airport expresses.
--
Roland Perry