A lot of IC services will stop running on the existing lines once HS2 comes into place, or more likely, operate more slowly with more stops. This will provide better coverage of smaller stations and clash less with local services.
Once HS2 opens, the strategy will be to fill every single seat for the maximum price each passenger is willing to pay. For this, a mixture of advanced, 1st, peak, standard, etc, ticket options will be used - like on the existing network.
As HS2 will provide a ton extra capacity, expect quite a lot of cheap off peak tickets in the first few years!
The existing network is charging a premium due to lack of capacity - XC and WCML routes being a good example of this. Of course, having some more capacity on the existing network also allows for some more competition from operators such as London Midland and Lumo.
The thing is - HS2 is a tool to provide extra capacity primarily, and faster journeys secondarily. How we choose to use that tool will massively change the outcome. Indeed, they could try to make it a premium service alongside the existing offering, or cut the existing IC services and replace entirely with HS2 with similar fares. I happen to think the latter makes much more sense and fits in with the logic behind the project.
Isn't part of the reason WCML fares are so high (even compared to other IC routes), that there is more demand than capacity? If that's the case the extra capacity would create a case for reducing (some of) the fares
Yes
Ultimately every passenger doing a HS2 possible journey on the classic line is costing the railway, and thus the state, extra money.
It will be cheaper operationally to move someone on HS2, versus the classic network for the same distance too.
Are there any high speed lines anywhere in the world that fit that description? Whether it's the best use of limited resources is a worthy question, but there is no chance it will be empty
Very much true, HS2 will be very well utilised.
And yet, Concorde made a profit catering exclusively to business traffic. If you're charging more per ticket you don't need as many people to be willing/able to pay.
HS2 is not Concorde. Concorde's issue was that it's operating costs were high and capacity low.
HS2 will have comparable operating costs to trains on the WCML and significantly more capacity.