Teletext is such a clever usecase, it's a shame it's not more widely deployed, and on the way out. It fills some of the empty space among frames of a broadcast

Teletext is such a clever usecase, it's a shame it's not more widely deployed, and on the way out. It fills some of the empty space among frames of a broadcast with dense text about news and current affairs, giving technologically effortless dissemination of popular content from a central source, scaling to infinite receivers with no congestion and no loss of quality. And the production of the content need not even be vertically integrated; individual programs and segments can be sourced and syndicated from third-parties. In our rush to go point-to-point, full-duplex, and on-demand, with both cabling and wireless, we have occasionally reimplemented services that are one-to-many simplex on top of lower layers that aren't made for that, whereas broadcast has always fulfilled the same usecase with a different set of tradeoffs. It's a bit ironic that new tech like HTTP/2 Push's cache fill is basically the same idea as Teletext's pages transmitted one at a time and cached at the receiver, but over a vastly different, pull medium.