Resale marketplaces (like TRR, Vinted etc) and Branded Resale

I wonder about resale (like third party marketplaces aka TRR, Vinted etc) and branded resale (a brand offering their own resale service on their own website etc, like patagonia worn or lululemon like new etc).

I am really drawn to this idea of buying second-hand through brands directly and I'm curious what you guys think: is there a reason you'd still not go to the brand directly? TRR and Vinted will forever be our default? Just cuirous!