1. Search Google for movie you want to watch.
2. Google shows a handy "Available on" frame at the top of the page, with prices (if applicable) and services that it's on.
3. Click the link.
4. Watch.
And you can rest easy knowing that you're not breaking the law because you're cheap and for some reason feel entitled to getting things for free.
Does it, though? https://imgur.com/Yxac3mL
I turned off my ad blocker and all other Chrome extensions and tried again before taking this screenshot, and really have no idea what you're talking about.
Still, the fact that Google has a workaround for this issue shows that it is an issue.
I've seen plenty of sites that also combine all the streaming service lists and let you search for specific movies or just browse based on genre.
Could it maybe be easier? Sure. But I'd argue it's still a lot easier than pirating...