I'm not sure this is on topic here, but probably can be best answered by this community, so I'm posting it as a soft-question.
Due to the pandemic, FOCS 2021 will be a virtual conference. Most conferences, when moving online, reduced the registration fee to some two digits number. At FOCS, however, the cheapest registration fee for grown-ups still starts at $600, without any reduction from the offline figures. Is there any justification for this?