Earlier quoted context omitted.
If someone can't afford to pay $1 per year for something that allows them to communicate faster and cheaper then they are so fucked it's not even funny. We're talking mind-boggling levels of poverty. How are they able to even pay for a phone and mobile subscription? Where do they live? How do they eat? It sounds to me like a made-up sad story used as an excuse for rich corporations. If there are people that poor out…
Not sure where in the world you live but if the medium income for Malawi is $250 dollars and the medium income where you live is $25,000 convert 1 dollar to $100. Would you pay $100 dollars a year for whatsapp? I wouldn't. For those living in the valley making 250,000 a year that translates to $1,000 dollars. To me that sounds like flushing your money away. The best phones are under 1,000.
Even if you use whatsapp on a $50 phone (which you use for say 5 years) with a $3/month plan (which seems incredibly cheap), you have amortised costs of $46 per year. Increasing it to $47 to get whatsapp does not seem as unreasonable as you suggest.
Malawi is also an _extremely_ poor country, for reference Bangladesh have ≈ 5% smartphone usage with a GDP of ≈ 4000 USD per capita (PPP) while the GDP of Malawi is ≈ 1000 USD (PPP) per capita.
I would argue that not paying (but having the means to actually use whatsapp!) is more of a choice, or lack of payment infrastructure, rather than not having the disposable income to spend 1 USD per year for the service.