Well, you know what to do - just sell a system that runs COBOL on an x86 cluster or Kubernetes or whatever, and you'll make billions!

Be sure to allocate me a bunch of shares for giving you the idea.

That's demonstrably untrue. The "mostly" audience you made up is a shrinking set, and the sales of huge mainframes has CAGR more than PCs. If your claim were true the sales numbers for these mainframes would not be what they are.

This is an expanding market, due to the needs for more and larger and faster data processing uses for new tech, new markets, new transactions, new capabilities.

Many of those machines are running Java workloads, also COBOL isn't the only mainframe language, and the best thing in terms of security is that they don't use C as systems language, rather saner stuff with proper arrays, strings and bounds checking.

That is why Unisys ClearPath MCP is still a thing, tracing back to its Burroughs 1961 heritage, security above all.

Not just COBOL, but also CICS, IMS, Java, and DB2 (although the last two are easier to migrate away from).