Well. I have to admit you're right. But it seems to not be universally true.

In Poland I have found that price for companies can be 3x higher based on at least one source. C11 - the tariff for the companies seem to cost 1.6 PLN / kwH [1] G11 - the same tarrif for households seem to cost more like 0.4-0.5PLN / kwH [2]

[1] https://www.energa.pl/mala-firma/umowy/prad-dla-firm.html [2] https://www.energa.pl/dom/umowy/taryfa.html