Zeitgeist is one of the most useful loanwords in English. It means the spirit of the time, the mood that everything is happening inside, and there’s no English equivalent that does the job.
Pairing it with market gives you a name for the business of reading culture commercially. Trend forecasting, cultural strategy, consumer insight, and the whole industry of telling brands what people are about to want. That’s a real market with real fees and a client base that renews annually.
It also reads as a marketplace for cultural products, which suits a curated shop, a cultural listings platform, or a media property covering what’s current.
Two words, one of them distinctive enough to be memorable and the other plain enough to ground it. No hyphen, .com, and the German word is spelled the same in every market that borrowed it.
The name is available. Offers welcome.