Non-ISA stocks?

[FailedTuringTest]

See this thread, there’s a discussion about this issue (edit: the Alibaba issue, that is) there:

Ali Baba ISA wrapper criteria

I was just wondering, how comes we can’t have access to Ali Baba in an ISA wrapper? Whilst I appreciate that some Chinese stocks and ADRs mean they aren’t ISA compliant. However multiple of your other rival platforms allow access to it via an ISA and T212 does. So surely that shows its still possible? Is there a difference for a reason and is this something that could be reassessed again?