There is no limitation for CinemaDNG support. It is an open standard that requires no licensing fee. There is plenty of both free and commercial software supporting it. There are cameras supporting it. The patent under discussion doesn’t prevent BM from implementing it.
Furthermore, BM’s software is not free. It is a commercial suite that currently costs $300 (an inexpensive price point, likely subsidized by selling $xxx–$xxxxx hardware controllers without which Resolve is moderately painful to use). They do offer at no cost a limited version where certain features spawn a “please buy” pop-up; in return for that limited version they collect plenty of personal data including your full name, email, phone number and the company you work for. I know this all because I have in fact used Resolve (frankly it’s been somewhat buggy on macOS though), have you?
If so, you should probably know that they have in fact incorporated support for CinemaDNG into Resolve, including the free version, but your comment doesn’t seem to acknowledge that.
Furthermore, BM’s software is not free. It is a commercial suite that currently costs $300 (an inexpensive price point, likely subsidized by selling $xxx–$xxxxx hardware controllers without which Resolve is moderately painful to use). They do offer at no cost a limited version where certain features spawn a “please buy” pop-up; in return for that limited version they collect plenty of personal data including your full name, email, phone number and the company you work for. I know this all because I have in fact used Resolve (frankly it’s been somewhat buggy on macOS though), have you?