It depends how much you like 720 video with stero audio. You might get lucky and get 1080 video. I personally pay for and actively use the 4K Dolby Vision video with surround sound, but that’s actively blocked by the streaming services in a browser, even though I can stream it in a browser from my Jellyfin instance while traveling to another country on hotel WiFi without much of a problem.

If you mean standard streaming apps the answer is “sort of”. You can run them in a browser with significantly reduced quality, but that’s it. All the streaming services now require Widevine certification (Android) or the Apple equivalent and might list in the locked down Roku store. They themselves do not support anything better than minimally OK anywhere else.