There’s little real impetus to change widely-used protocols. Job security, product/support sales and developer “consumerism” novelty aren’t valid reasons, but often get pushed with spurious “reasons” to fulfill agendas, despite their cost.

The only demonstrable needs are bugfixes and significant advances because inventing and imposing complexity in all implementations or damaging backwards compatibility are insanely costly in terms of retooling, redeployment, customer interruptions, advertising, learning curve, interop bugs and attack surfaces.