No one is scared of Nintendo. In order for Nintendo to stay alive, they're going to have to appeal to people that are teenagers and younger because no one my age or older cares about. N64 was the last good console they had. Gamecube wasn't that bad, but it wasn't marketed properly, and the games for it were really awesome or sucked eggs.
What have they got to be afraid of? For most serious gamers, the Wii was a second console that was mostly dragged out for parties (a few awesome games aside) and the WiiU completely failed to capture the imagination.
I have a 3DS, damned if there's many games on it that interest me, and DAMN are they expensive!
Nintendo abandoned the competing market ever since the original Wii so they don't have any reason to be afraid. As far as the NX goes I'm sure it won't even be on par with the PS4.5 and the only ones being "afraid" are Nintendo investors debating whether they should actually release a new console that isn't even going to be on par with the current competition.
nope. Nintendo is running pretty much out of competition... they have their own target audience and many of those having a Xbox or PS buy a Nintendo console as second device and not to replace their XB or PS.
Xbox Scorpio and PS Neo come for other reasons: - PS4 and XBO were already underpowered when they launched compared to the last generations. Going again 8 years or longer would be difficult - 8 year launch cycle was an exception... looking back the new consoles always came much faster. - VR is coming and you need more power for that unless you wanna have shitty graphics. - 4K support is great for marketing and people are willing to buy more powerful hardware after a couple of years. If Sony and MS can make additional money like this, then they will do so. - the new graphics card generation made a huge step. thanks to this they can easily increase the power without increasing the costs. - etc.
Sony and MS are battling each other for the most. They will keep an eye on what Nintendo does, but they are definitely not afraid of them and the new Consoles have nothing to do with the NX. I also doubt they know much more than what we do and Nintendo already said that they won't participate in the race for the most power, means the NX will almost certainly be less powerful than the Neo and Scorpio
Both Sony and Microsoft are large enough to withstand any initial blow nintendo can do. Sony and Microsoft have loads of cash and huge research departments. A few months and whatever advantage nintendo has will be integrated into Sony's and Microsoft's consoles.