Maybe this is because it is a community project with no single company in control of it.
Yes. In an organization like Postgresql, someone's contribution is measured by how much they contribute to the code. In an organization like Mysql, someone's contribution is measured by how much they contribute to the bottom line.
Yes. In an organization like Postgresql, someone's contribution is measured by how much they contribute to the code. In an organization like Mysql, someone's contribution is measured by how much they contribute to the bottom line.