Thankfully there are solid alternatives in certain areas like fore example using iPhone instead of Android.
But for everything else I don't see a massive migration happening any time soon. Notion, Hey.com, DuckDuckGo are all niche products. My dad has Gmail and I can assure that's going to be the case for ever. He is never going to find out what Hey.com is. Even if he does he is not even going to consider it.
Google didn't blew a ten-year lead on anything.