Do you really think that there is going to be a groundswell of manufacturers adopting the Tesla standard? It's not going to happen. If it was, we would have seen it happening already.
The SAE, who regulates such things, has settled on the CCS standard. VW, who is going to be building their own network, is going CCS. All of other fledgling networks are CCS. Nobody.... repeat, nobody... is going to the Tesla standard.
I don't understand why people would oppose this. Put both ports on the 3 and the S/X. It's the best of both worlds. And then you will have fewer legacy car headaches to deal with when, eventually, the Tesla standard goes the way of Betamax.
Paraphrasing Sun Tzu "Don't fight the battle that you can't win.".