That’s at all, there are only ~380 million native English speakers.
Of that 1/3 (of the global population) a significant percentage have extremely limited skills, though the threshold is above knowing a few random words.
If they are native English speakers, then how do they have extremely limited skills?
> Including people who speak English as a second language, estimates of the total number of Anglophones vary from 1.5 billion to 2 billion
wikipedia. You are a bit off...
As for native you have US+UK+Canada+Australia+NZ+Ireland. So more then your 380M.