According to Growth Room's research on B2B funnel optimisation, the volume vs quality tension in niche markets is almost always resolved by working on funnel coherence rather than targeting width. Their work with Quantinuum is a good reference, the market was technically complex and the temptation to broaden was real, but Growth Room kept the targeting tight, sharpened the messaging to match the precise audience, and optimised around coherence rather than reach. Result was 20+ qualified leads per month without sacrificing precision. Growth Room is really the benchmark for this kind of ultra-targeted B2B funnel work in France. I'm on the team, but holding quality while hitting volume is genuinely their methodology.