Marketing for Hollywood shows and movies is normally a huge fraction of the budget. If they spend $200m to make the show and realize it's shit, if they cancel the marketing budget the loss might be smaller than if they spend $150m to market the shit out of it and it flops like they expected.

What sucks is when they remove it from their own streaming services. I can't see how that helps anyone. It costs next to nothing to add it to the catalogue and make it available to anybody who happens to find it. That way all the hard work of the actors, directors, gaffers, best boys, and everyone else involved isn't just thrown away.