I think this is also one of the hidden benefits of commercial open source and similar models: individual adoption grows corporate adoption.
Even if the original elastic company offers it cheaper, or better, that's a massive hill to climb. Corporations don't care about costs, they care about pieces of paper, or less charitably nice dinners with the sales team.
That by itself is worth the extra cost for some organizations. While I’m a big fan of AWS as a technology provider and have been heavily in the ecosystem for 8 years, I’m no fan of the company or the organization as a former employee.