Re: On the other hand...
> Does that mean that if a business only accepts USD then GDPR cannot apply?
If it doesn't operate in UK/EU, then yes.
The judgement is that offering transactions in the local currencies (£/€) is tantamount to operating in the UK/EU. It is expanding the definition of what it means to be operating in the UK/EU for GDPR purposes.
Therefore either physically operating in the UK/EU (i.e. a local office) or effectively operating in UK/EU (trading in £/€) is sufficient to establish the link for GDPR purposes. It's not an "and", it's an "or", both don't have to be true. If the ruling stands that is.