Using Java gets many companies almost to the goal line, while paying less, and having a bigger pool to hire from.

"Why we chose Java for our High-Frequency Trading application"

I’m not saying it can’t be done, and I understand the economics can work.

I still just feel like a non-GC language (maybe even Rust) is a better choose when nanoseconds matter.

	▲	pjmlp 4 days ago \| parent [-]
		The only non-GC language that offered Java like capabilties in productivity, without being either C or C++, was Delphi, which has stuck being mostly for Windows shops, and is taited with the way Borland went through re-inventing itself. Ada is not something that these companies would bother using, even though there are about 7 vendors still in business. Likewise with either FreePascal or Modula-2. Most likely a few of these exchanges are writting new code in Rust for such deployment scenarios.