You mean two companies that run their businesses on a global, standardized, interoperable computer network aka The Internet?
You're making the case for CCS. I agree with you. A common charging standard is better for everyone, just like common internet protocols allow Facebook and Apple to be successful.
No, I mean two companies that are notorious for vigorously defending their proprietary walled gardens.
Tesla's current charging network is more like the early days of AOL or Prodigy. They both eventually converted to being internet providers.