The sestertius isn't what it used to be.
It was also unfortunately timed. When they started they were competing against webpack, but right around the start of the project compilers written in more performant languages like ESBuld and SWC start to take off and out compete Rome before it even got off the ground.
Even Vite+ is focused on vite and rolldown first, and formatter last.
But when SWC/Esbuild came around to prove how much faster and efficient the compilation can be when written in a more performant language like Rust or Go, all hype around Rome died because no one wanted another Javascript toolchain.
Turbopack is backed by Vercel who obviously have a lot more capital behind them, but it's also built on Rust and at least has the potential to compete.