What do you mean by "expected to" OP? Do you mean that employers expect to pay men in relationships more than women due to indirect discrimination or that women practice hypergamy?
I think hypergamy is a bigger thing in the US than the UK (cannot speak for Australia) but in the UK the professions have been full of women working for high salaries for decades now. There are many, many high earning women in the UK. In non-English speaking countries, those opportunities for women are not necessarily there so it may be more of an expectation in those countries than here.
Of course some British women still deliberately marry up but I don't know how realistic it is for degree educated or higher earning women to deliberately set out to do this, because many men here simply don't earn that much. It would obviously be easier for a non-working woman to marry a man who earns more than her.
Then theres the women who stop working, often temporarily, to raise children, often returning to the workforce. But overall, I'd say no to your question, its not "expected".
I know that Jordan Peterson if very popular in the US for talking about hypergamy, but he comes across as very dated and limited in his opinions on this point to a British perspective. Of course, there will always be a sector of male society that insists that women marry for money and so on, but that sector don't seem to marry higher earning women or even be aware of the high numbers of high earning women that there are now, so it seems over-represented, at best.