How does WhatsApp make money? It's free - with some tricks
Individual, personal WhatsApp accounts like mine are free because WhatsApp makes money from corporate customers wanting to communicate with users like me.

https://www.bbc.com/news/articles/c8j7nrppny2o

• How does WhatsApp make money?

  We all use messaging apps such as WhatsApp for free, but what's in it for them?

  https://www.bbc.com/news/articles/c8j7nrppny2o