I honestly dont think Sony needs to change the specs. If Neo is 399 or less then its an attractive price with no competition at launch
Games are already pushing up against the memory bandwidth and cpu limits of PS4, Neo only offers a 24% boost to memory bandwidth and 21% boost to cpu frequency. Look at the removal of mb demanding fog (alpha effect) in Harbor expansion in Fallout 4, lack of AF in many games, tendency for games to use low resolution mipmaps, uncharted 4 using shaders to achieve a more detailed look on clothing and material surfaces isntead of high resolution material textures.
This means that while Neo may have the shader/alu capacity to double framerate, its held back by its memory bandwidth.
The Scorpio on the other hand likely has slightly over 320GB/s memory bandwidth which is a significant leap above Neo's total system memory bandwidth, and it should be able to double the fps in games at 1080p at vanilla console image quality.
Now if Scorpio is only $100 more, that is certainly a plus for MS. Would you rather play GTA6, RDR2, Cyberpunk 2077, Elderscrolls VI, Fallout 4, Battlefield [insertname], next Batman Arkham game, next Farcry, next AC, etc at 30fps or 60fps?
Remember what almost everyone who shops for videocards is looking for, most would jump at the opportunity to find a videocard that could double their framerate for only 20% higher price.
3DFX didn't go out of business only because they turned their backs on the OEMs, they're Voodoo3/4/5 cards were a fair bit lower performance than Nvidia and ATI. Nvidia didn't get its historic marketshare lead because of nothing. Historically its cards regularly beat ATI/AMD in most generations.
While exclusives are a critical factor for consoles, don't assume performance leaps of 60 fps versus 30 fps isn't as well.
I'm sad that Sony is dropping the ball here.