Facts of the matter are that demand is outstripping supply - and there will be a price point at which it's worth other companies stepping to fill that demand. Prices are apparently still considerably below that point.
There's something else going on here, 10 sheets of 10x8 Tmax 400 or Tri-X 320 are now £180 here in the UK, contrast that with 25 sheets of 10x8 HP5 for £155 and that's a hoge difference way more than 2.5 times the price for Kodak compared to Ilford. It's more like 2x the price for 5x4 Kodak than Ilford, add adox in the mix at slightly less than Ilford. Lets not forget Foma who are half the price of Ilford.
Kodak's market share for B&W films is now almost certainly smaller than Foma, Ilford have had more than 70% of the market for over 20 years and that used to be followed by Kodak but with Kodak's disaterous out sourcing of distribtion world wide they lost theremarket share in most countries. Here in the UK they closed their own distribution division and made the staff redundant and their new distributor Sangers went bust in a year. Luckily their former team stepped in setting up distribution.
In many countries their distributors concentrated on the colour market, larger labs and particularly minilabs, I know from first hand experience while living and travelling abroad Kodak B&W films where near impossible to buy, Ilford was availble everywhere as was Foma to my surprise.
Reality is I've just bought 100 sheets of 10x8 Fomapan 200 for £285, that £2.85 a shot compared to Kodak's £18, Ilford HP5 would £6.20 a third approx a third the cost of Kodak.
Ian