This is a deal breaker for anyone using OSS processing pipeline, since 1) BRAW isn’t lossless, AFAIK and 2) it was impossible and to this day is problematic to convert BRAW to something raw development tools understand (DNG).
Luckily, I noticed that just before I bought a unit (!). Now I’m a happy owner of a Sigma fp, which not only is sold with CinemDNG support—shows that BM did have some choice, after all—but is also technically superior.
If I ever do something where their gear is required and someone leases it, sure, but I don’t see why I would give my personal money to BM after how they handled this.