It all depends on what the Customer can afford.
Running production on HW which is already EOS/EOL is acceptable in some cases, especially if there is a future plan to migrate/decommission of respective HW.
Please correct me if I am wrong, but Check Point can still provide you valid support (best effort) on HW which already reached EOS/EOL.
VSX is a good choice in terms of the ratio between money and performance. You can migrate dozens of physical appliances into 1 single box (VSX), without need to buy additional HW for replacement.
That said, everything is about money ...
Kind regards,
Jozko Mrkvicka