In an article about Kodak:

"...according to Mark Kaufman, an analyst at Rafferty Capital Markets Inc. in New York...

“Their old film business, which everyone abhors and denigrates, has been generating cash over the years consistently,” Kaufman said in an interview. “The other big cash generator has been their licensing fees from their patent portfolio.”"

I think it's still safe to buy Tri-X just twenty rolls at a time.