WordPress is free software that’s written and maintained by hundreds of volunteers, all over the world. While some people are paid to work ON WordPress, no one is paid BY WordPress. There are companies, like Automattic but also 10up, Bluehost, GoDaddy, and others who pay full-time developers to work on WordPress core (that’s what we call the WordPress that you install when you start a new site: WordPress core). There is a non-profit called the WordPress Foundation, but this non-profit has no employees and only serves to hold the WordPress trademark. The Foundation owns a corporate subsidiary (called WordPress Community Support, PBC) that supports official community programs as well (this corporation also has no employees), serving as the legal and financial entity behind WordCamps and meetups.
WordPress community events are informal, community-organized events that are put together by WordPress users like you and focus on WordPress. Everyone from casual users to core developers participate, share ideas, and get to know each other.
WordPress community organizing is performed just like all other aspects of the WordPress open source project — using the same open source methods and values, and using many of the same tools as open source software development. It’s important to note that building a WordPress community is a contribution to the WordPress open source project, just like a contribution of code.