I bet each one of them has exclusive products not available on the other ones.
Having more than one to choose from is still an option.
Having more than one to choose from is still an option.
And I also know a few that still use and buy feature phones with their OEM only apps, with "by invitation only SDKs".
Which makes the choice bigger than two actually, when one looks at the actual market distribution, something that a judge will care about.