Yea, fiber is great. They can do hundreds of terabits/s per fiber today, and petabits/s is not far away. Bandwidth is fundamentally cheap enough that my ISP offers 50Gbps residential service!
Can I ask where do you stay? Korea? 50G is insane, is it on qsfp? Also what's the pricing on that?
Can I ask where do you stay? Korea? 50G is insane, is it on qsfp? Also what's the pricing on that?