Networking normally happen between people roughly equal in power and influence. I hope you remember the attitude of Eric towards Felicia during the art exhibition? Yes, he is a special kind of asshole but nevertheless this sums them all. Also the attitude of Grace towards Victoria.
For rich and influential people they always be just sluts. How Felicia in this sense is different from the house girls?
Members are
vastly different from house girls. If you can't see that, I can't help you.
And why would they invest into a business of a failed cheating housewife with no previous business experience?
The same reason anyone invests in anything ever: to make money. The potential ROI for a business opportunity doesn't necessarily depend on the person running the business. And as far as the rest of the world outside the club knows, Felicia is an upstanding citizen and connected socialite. Why
wouldn't it be a good investment, assuming the business fundamentals are sound?
What does she have to invest? Her cheated husband's wealth? She wouldn't get any even if he wouldn't find about the Club and wouldn't divorce her leaving her penniless.
She's not penniless. None of us know this answer, obviously, but she clearly has some resources of her own, or she wouldn't have been in a position to offer Edwin a... retainer, let's call it.
Dalia or Harper know a lot of that. So what? Did it help them to become something more than just VIP-whores?
Again, members are very different from house girls. And for all we know, yes, maybe their knowledge
will help them out once their contracts with the club are up. There's no way to tell.
OK, they can even invite her to a party or two, still calling her a slut behind her back. How can it monetize?
Donations for charity. Fundraising events. Charging admission and having people pay it because big names are there. This is another easy one.
For them she is just another of the Club whores with the only difference that she is a failed wife of one of their peers. Which IMO would make them look down and despise her even more than if she would be just an ordinary house girl.
This is really the crux of the issue, still. To you, Felicia is tainted, failed, disgusting, unworthy of respect, debased, nothing but a whore. To summarize in meme:
You can't get past your own opinion of Felicia and imagine anyone perceiving her differently. That's fine, but it's making you discount perfectly valid answers just because you don't see a difference between Felicia and the house girls. And if she loses, you're probably right! In fact, she'd be in an even worse position than the house girls. But if she wins, it's a completely different story.
I can't tell if you're arguing in bad faith, but I don't think you are, or at least not on purpose. I think you just legitimately can't see past your own reactions to imagine how anyone could view things in a different light. From where I sit (and maybe I'm wrong), it seems like you don't even really want to try. And that's perfectly fine too, but it makes it impossible to have a discussion.