PET withstands stress better, far as I know. So good for motion picture cameras.
But why then entered Catlabs our, the Photrio, market by means of starting this thread and do not give this market, thus us, what we want?
And to keep further to your wording:
Manufacturers who alienate the market will not thrive.
Obviously, they wanted to sell film to the people here who would try it. That they're not prepared to provide information that would
definitely be provided to them by the manufacturer of the film is their choice. It doesn't alienate their market, because their market don't want that information. Their market wants to get "cool photos".
Anybody who knows anything about the state of current film manufacturing knows that Catlabs and Japan Camera Hunter and Kosmo Photo don't make any film. There is absolutely
zero reason to expect a spectacular new product from any of them. Why bother acting like there should be?