WhatsApp provides message chatting, video call chatting, voice call chatting services providing mobile app. In 2014, Facebook acquired WhatsApp for 19 Billion USD. Headquarters is in USA.
WhatsApp Market Value can be between 80 and 90 Billion USD as on 2023 as people more dependent on WhatsApp across the World for video calls.
Even if 4 USD is charged per person per anum going ahead then if paid customers are 1 billion out of 2.7 billion users, then they can get 4 Billion USD revenue and on the rest of users by means of adds they can generate between 500 million USD to 1 Billion USD.
Then WhatsApp has potential to earn revenue of 5 Billion USD per year.