In my experience at mid-sized companies the decision is usually made by the development teams themselves who have a choice along a spectrum between a proprietary SAAS solution that may end up costing the company unpredictable amounts of money in the future on one end and a self-hosted open source solution that we have to trust the IT/devops folks to maintain competently on the other.
Also in my experience, the companies that were the most cost sensitive with regard to paying for dev tooling were also the ones with the weakest IT/devops support so you either end up with two good options or two bad options.
Also in my experience, the companies that were the most cost sensitive with regard to paying for dev tooling were also the ones with the weakest IT/devops support so you either end up with two good options or two bad options.