Quora lends itself toward SEO spam. It's written word. Clubhouse currently isn't archived in a machine-readable format. This eliminates a decent 60% of the value for commercial purposes, and probably 30% will be taken care of by users having the common sense to avoid any overwhelmingly-obvious marketing.
Of course, it already is seemingly just a platform for aging capitalists and twitter users to "have discussions," which seems like shorthand for "advertise themselves." I couldn't call it good by any means. But that's more or less what every social media platform is, and not different than what you'd find anywhere else.
However, it seems unlikely it'll get much worse from here.
I also think it's a mistake to think that common sense will save us. Everybody has weaknesses, and any given scam is carefully optimized for its target audience.
Unfortunately.
Clubhouse is great right now and it seems to take far too long between “lightning strikes” of awesome communities.
What made Quora special in the early days was the high-quality community. Smart questions, smart writers answering them, even a reasonable proportion of smart comments. That seems to be the same sort of magic that Clubhouse has managed. It's not the technology, it's the community.
But as Quora tried to scale, that got worse and worse. It wasn't a small set of staff doing moderation, but a wider group of volunteers. The average quality of the questions declined. Comments became more tiresome. A lot of people started writing answers not for the joy of it, but because Quora's larger platform provided them with a means to some personal end. Comments became more tiresome. Indeed, now one of the first search results I get for "Quora" now is an article titled "How to use Quora to power up your lead generation." Ugh.
I'll be really surprised if Clubhouse manages to avoid a similar fate. There's a very low barrier to entry.