Small typo right there
To topic: Especially the Smartphone business was definitely foreseeable. There won't be many customers for the Galaxy Fold, even though you have to give Samsung credit for showing REAL innovation since a long time, although it's certainly not perfect and will have its issues, like with any new product/technology.
The S10 series was at least something new compared to the S8/S9 series, but still didn't meet expectations (battery life, fingerprint sensor speed, etc.)
I don't think 5G will make a huge impact in smartphone demand. It's just useless if you don't have the infrastructure surrounding you and since we can all observe the news about the 5G auction here in Germany, I don't have high hopes for good coverage anytime soon.
While I personally don't need higher internet speeds on my phone as I rarely download anything large while not being at home, I could imagine 5G being widely available once our CURRENT smartphones have dropped out of software support... But that's just my personal point of view. Like with 4K gaming which is now "available" for quite some time, but only recently has become practical/operabel/practicable.