[lightningspirit]

I think we're comparing two very different categories. COBOL is an application language, whereas TCP and HTTP are foundational infrastructure. Replacing a language is challenging, but replacing the infrastructure that underpins most of the Internet is orders of magnitude more complex due to the sheer number of interoperating systems.

HTTP accounts for roughly 70-80% of global web traffic, and if you narrow it to TCP-based application traffic, its dominance is closer to 95%. Comparing HTTP to COBOL is a bit like comparing trucks to bicycles...