Apple TV content only plays intermittently with Roku

I have a Roku Streaming Stick + and I can use it to watch content on my smart TV in my living room. It works great with many services. Netflix is flawless and I have no internet bandwidth/streaming issues with Netflix or any other service. As I have other Apple products, iMac, MacBook Pro, iPhone, I decided to use the Apple TV streaming service with Roku and now I have trouble streaming certain titles with Apple TV receiving messages that the "video isn't available to watch" and to "Wait a moment, then try again." Waiting moments, restarting the streaming stick and uninstalling and reinstalling the Apple TV service from Roku does not fix the issue. My question is since Apple seems to feel this is not their problem, why should I continue to invest any money in any of their content or streaming services going forward? I am seriously considering a divestment from Apple technology since they seem to have the only streaming service that is offering me difficulty. Can anyone think of any reason I should keep giving Apple money?