I'm going to make an educated guess.
It would cost a lot of money to develop an entirely new product. A contact paper would apparently be of a type that they don't manfuacture right now. After having invested in a new coating machine, money must be a tad tight, especially as the B&W market shrinks.
Therefore, all things considerred, I think that they are not going to do it unless they get some sort of assurance that it would sell well. Unfortunately, they are well aware that the track record for Azo or contact papers in general for making profits soar is quite limited.
So, there you are... It would cost them quite a chunk of money with very slow, marginal returns over many years.
I believe that the highest probability of such a paper comes from somewhere else with either lower costs or more available leeway to invest in such a product. And, I'm probably wrong and Kentmere is going to introduce it tomorrow.
PE