I get the "lol aws is owned" angle but it beggars belief that a petabyte of data transfer only costs $0.13. This is clearly unsustainable and we'll have to find out later what the hidden cost is
Thing is, all cloud providers do own the pipes, so they just rent-seek on egress pricing. Cloudflare is disrupting that model.
That is the only avenue why I can see why paying for S3 is worth it. Sure egress may be free, but what's the point if I can't download a file faster than 1MB/s.
Linode, Digital Ocean and other hosting companies sell small VPSs with 4TB bandwidth for $10/month and still making profit. At places like OVH, Hetzner bandwith is virtually unlimited.
The average Linode customer is not using 136GB of bandwidth per host per day.