Considering that Opera is based on Chromium, I'm disappointed that Amazon Prime video does not play in Opera, but it plays in Chrome without any modification.
In Opera, the site presents a 'Digital Rights Error' with instructions to go to chrome://plugins (opera://plugins for Opera) and ensure that Widevine Content Decryption Module is enabled. Despite the fact that it is enabled, video still does not play.
Please add better support for all video sites: Amazon Prime Video, Netflix, etc.