Nintendo's success with the Switch both a blessing and a curse?

[zorg1000]

goopy20 said:

PAOerfulone said:

And? That ultimately wasn’t a problem for the Switch as it released halfway through the PS4 life cycle and during it’s peak year, but look how that turned out.

Secondly: In 2023, the PS5 will have only been out for barely 3 years and you expect it to already be at 60m? 20m a year, right out of the gate? I think you need to tamper your expectations just a little bit. The PS4 was barely passed 50m by that point. 

Well the ps4 was at almost 54m at the end of 2017.

https://www.forbes.com/sites/olliebarder/2017/01/05/the-ps4-has-now-sold-53-4-million-units-worldwide-with-6-2-million-sales-over-the-2016-holidays/#645d238a7b41

If the Switch keeps selling as is, then obviously there is no problem at all for Nintendo. But keep in mind that while the Switch did sell great, it's still only slightly above the Xone sales and who knows how sales will hold up when the next gen starts. 

Why do we need to keep that in mind?