A while back, Simon Galley answered this very question on APUG. He said that Ilford (Harman) had no intention to enter the color film market. They did make Ilfochrome dye bleach paper for the Swiss IIRC and it was a pain to produce.
They do not have the equipment nor the capacity to coat color products on a WW scale, and expansion is expensive for this sort of thing. Kodak has a plant at Harrow which could do the job if Ilford (harman) leased time. IDK how that would work though.
BTW, Kodak Endura paper is made at Harrow and the boxes are marked "color" not "colour". It saves a pretty pence by leaving out one useless letter. :D
But then on the other hand, it's not like Harman continues to slowly but surely discontinue products from their film lines either. Large numbers of Ilford brand b&w users are not migrating to Kodak due to a perception of greater long-term film product availability.
What was that about "1000 cuts?"
But what about five years into the future, as opposed to "a while back." Things change. Changes come unexpectedly. And usually from the least expected directions. (Just ask Mr. Perez.)
How long was that recent Kodak motion picture stock contract supposed to last? How about after that expires and the theater conversions are complete and all projection is done digitally. How about then?
Or how about after the final Portra film line has eventually been discontinued and there are no other still photography color options left? How about then?
It's dangerous to assume that the world will always be exactly as it is/was at any given moment in history.
There are some scenes that cry for color but are shot in B&W. A beautiful field of coiled grasses becomes bland in B&W but would be beautiful in color. I see this so many times on APUG. Don't forget color!
As for in the future, if Kodak and Fuji left color, it would be for a reason. That reason is cost and ROI. At that point it would be futile for Ilford to enter color.