Tried hiring people for Ada jobs, or finding open source stuff to use in it? Ada has failed to find a market even in the safety-critical niches it should be dominating. Heck, AdaCore is putting out more Rust stuff these days than Ada.
Well, COBOL just got ISO COBOL 2023 out of the door, and both Visual COBOL and NetCOBOL, still offer a much better development experience than many FOSS toolchains.