Foxglove has been one of the companies that contributed to modernizing the ROS ecosystem. I hope this business decision will not affect all these efforts.
Still, keeping schemas, data formats, layout descriptions, and other declarative specifications open and standardized is essential for a healthy ecosystem. MCAP is perhaps the most important item (assuming support will continue) but what about these layout descriptions and their schemas:
Given your experience in data visualization and management, an open standardization project led by Foxglove on layout descriptions may be well-received, too.