Eurostar have around 80% market share on Paris–London for good reason. At 2hrs 15mins from city centre to city centre it's faster, less hassle, and more comfortable than flying. Security is less strict (you can take liquids) and you don't have to check your bags. Two large items of luggage are also included for every passenger. It's not even more expensive than flying if you book in advance if you include the price for airport transfer.
London–Paris is just an example in the article to demonstrate the range of that hypothetical aircraft. It could also be useful as a demonstrator.
Does depend where you are though. If you're in London or Paris or in easy reach of the Eurostar stations by train, then Eurostar is amazing.
If you're in the north of England, it'll take you longer to get to London than it will to get from London to Paris afterwards. At that point flying starts to look a lot more attractive.
I think the parent might mean eg. travel from the UK outside of London to Paris, and France outside of Paris to London. In that case you'd probably spend longer traveling to the Eurostar in your own country than on the Eurostar. The same would be true if you traveled to an airport in London/Paris to fly, but there's the alternative of flying from a regional airport direct to London/Paris instead.
Nah, I was just overestimating Paris's status as a flight hub. Although I do wonder if connecting in Paris might make more sense from some of the smaller London airports.
Please list that 'double digit' number of airlines that fly between Paris and London. I get to max 7 (British, Air France, easyjet, Vueling, Transavia, flyBE, cityjet)
There's no shortage of other airlines selling the BA, AF or Vueling flights under codeshare agreements as a leg of another journey, which is one of the main reasons why demand on that route exists. Iberia and airBerlin sell others' LON-PAR flights under their own code as a point-to-point flight too. Not to mention the daft indirect itineraries you can buy if there's really no other alternatives
London–Paris is just an example in the article to demonstrate the range of that hypothetical aircraft. It could also be useful as a demonstrator.