For consumers or businesses? Not being nitpicky here: I am not familiar with the French ruling, so I would genuinely want to know - as regulations tend to differ (businesses, even single sole trader ones, do not enjoy consumer protections). Not really relevant for the Terraria dev as it is his personal account that is banned, from the sound of it - but important.
For consumers. Businesses are considered to have both more (legal) resources to conduct deals as well as a need for more flexibility. However in this case this sounds like the account was personal, so even if it was used for business purposes, the deal was personal. In Europe (France here) typically the distinction is not in the use but in the contracting party.
A business is registered with tax authorities and has an identifying number, if you contract a service without such a number you're doing so personally so for such purposes you're a consumer and bound by consumer laws. Indeed, all registration forms for services ask you for that number and business address. Services that don't want to / can't be subject to consumer protection laws or are not allowed to sell to private individuals require that number and verify it. Services that allow both individuals and businesses ask for it and may treat you differently based on it.