Companies like Amazon, Google and Facebook need their clients to have access to the internet. Because they have already landed most of the existing connected client base they are desperate to see more people connected. So much so that they are willing to provide internet for free.
This is a fantastic outcome for the planet. Access to the internet is a massive equaliser. Over the weekend it was announced that Amazon will be launching 3 236 satellites into orbit to provide high speed internet around the globe.
It makes sense for Amazon. That is potentially 4 billion new clients who could be buying things online, watching Amazon Prime and most likely using websites that are hosted by AWS. This is how capitalism can benefit people at massive scale.