This isn't true for all jurisdictions. For example, you can associate a U.S. bank account with a Canadian PayPal/Stripe account.A Paypal or Stripe account must be tied to the same jurisdiction as the accounts bank account. Thus, an HK company with USD bank account would only be possible with a US-based stripe/paypal.
Are you sure H.K. doesn't allow the same? You may have to add a H.K.-based bank account first, and then it might open the option to add a U.S. bank account as well.