My humble opinion is that in EU, CCS was mandatory moving forward for new Teslas at some point, due to EU regulations.
Hence the 3 got it and Y, CT... will have it.
That meant also another challenge and cost to Tesla: having SuC equipped with both of the old Mennekes like S and X have and the new CCS for 3. So Tesla added the CCS plug and cable to almost all SuC V2 in EU in no time. Quite impressed by the way.
We already know the new SuC v3 that is starting to roll out in EU will only provide the CCS, which makes financial sense. The Mennekes will fade out.
Hence, all new S and X still have the old Mennekes plug but they have the CCS adaptor delivered standard. And for older S and X, they have a campaign ongoing to have the modification done at a reasonable price.
In the US, I believe there is no such incentive or pressure for Tesla to bring a CCS adaptor.
Hence the 3 got it and Y, CT... will have it.
That meant also another challenge and cost to Tesla: having SuC equipped with both of the old Mennekes like S and X have and the new CCS for 3. So Tesla added the CCS plug and cable to almost all SuC V2 in EU in no time. Quite impressed by the way.
We already know the new SuC v3 that is starting to roll out in EU will only provide the CCS, which makes financial sense. The Mennekes will fade out.
Hence, all new S and X still have the old Mennekes plug but they have the CCS adaptor delivered standard. And for older S and X, they have a campaign ongoing to have the modification done at a reasonable price.
In the US, I believe there is no such incentive or pressure for Tesla to bring a CCS adaptor.