TI
They can have it - and did - But it was down to individual affiliates and cable providers.
Not every TV was required to have it built in as standard, which didn't help matters.
And then no-one found a way to monetise it, so they dropped it.
https://en.wikipedia.org/wiki/Electra_(teletext)
America never had teletext did it? Because their TVs are a different standard.
They can have it - and did - But it was down to individual affiliates and cable providers.
Not every TV was required to have it built in as standard, which didn't help matters.
And then no-one found a way to monetise it, so they dropped it.
https://en.wikipedia.org/wiki/Electra_(teletext)