I don't think so guys, Sony won the traction they needed to keep winning for years. New comers want the same console than their friends. That's how PS2 kept selling better, no matter how more powerful Xbox was.
What newcomers though? I don't think PS4 will ever get small/cheap enough to be budget consoles.
In previously generations, the old consoles kept selling well into the next gen as budget machines. PS1 and PS2 sold a third (or maybe even more, don't have figures on me) of their totals after their successor was released. Many people grabbed a PS1 in 2002 for the kids or a PS2 in 2007, and they had new drivers like Spyro sequels, Tony Hawk 1/2/3 and Guitar Hero driving that.
Didn't happen with PS360, possibly because of the elongated generation which had already exhausted anyone interested, and without the PS1/2 level of 3rd parties Wii crashed and burned as soon as NIntendo moved on to focus on 3DS/WU. This is the market segment that gets you to 100 million. And I just don't see that budget section of the market existing anymore outside of maybe a bit of 3DS/2DS for kids. Those gamers moved on to DS/Wii and now probably iPhones, Steam or nothing. Switch is somewhat of a play for them too.
EDIT: PS4 has had four years as 'the obvious best machine on the market', but it loses that title from many angles soon. That said, thinking about it GTA6 could be the thing that gets it there