In the announcement video released for the return of the Dutch GP at Zandvoort, amongst all the marketing speak, the following statement appears overlaid on video of Max Verstappen's: "future world champion?"
So, I ask you the same question.
I'm pretty certain that the 2019 WDC will go to one of the Mercedes drivers, so we can asume that Max is at 102 GP entries (86 so far, plus the remaining 16 for this season).
Here's how many races it took other drivers to achieve their first world championship:
Rosberg (Jr.) - 202
Mansell - 183
Button - 169
Raikkonen - 122
Hakkinen - 111
Prost - 90
Senna - 79
Alonso - 68
Vettel - 62
Schumacher - 52
Piquet - 49
Hamilton - 35
Villeneuve - 33