Currently, who decides who can have commit access to WordPress, the open source project - is it Automattic employees?

Who makes decisions about WordPress.org, and WordCamps - is it the WordPress Foundation, ie Automattic employees?

If Automattic was acquired by Microsoft, would Microsoft then have control of decisions made by it's new employees in these areas?

This isn't a pop at Automattic or Matt, I'm just interested in where the actual delineation is, and what acquiring Automattic would mean.