I think that the non-linear shannon-limit, limits currently LONG-RANGE installed fiber to around 12Tbps. It's possible to install wide-core fibers to improve on

I think that the non-linear shannon-limit, limits currently LONG-RANGE installed fiber to around 12Tbps. It's possible to install wide-core fibers to improve on that, but that's extremely expensive, nobody wants to do it, and it's doubtful it would decrease data costs over fully appreciated fibers, in the short term. Also we're not there yet, but we're pretty close and it might not make sense to upgrade further, so some say that in the next few years we'll stop seeing data prices go down.