I'm sure some have that as a sincere fantasy and they will never end up hooking up with anyone.  I'm sure there is a large percentage of wannabe Pretty Woman who come and go on these sites and never follow through.
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For the rest, they might as well shoot for the moon.  But are more willing to take the $200.  
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The strategy on SA is to ping everyone and see what shakes out.  You have a limited amount of time, so you should put everyone on blast before your subscription runs out.  Don't over-think their asks.  

As stated here and in other posts, there are many different reasons and wants from pots on any of the sites. Some: may want the dream or fantasy of a millionaire lifestyle, want advice and guidance, need help with bills, want to be with a different type or class of man (or woman), are pros or semi pros, want romance without or with minimal sex, want public and BCD fun, and so many more reasons.  

 
When you see a pot with pics showing nice cars, fancy dinners, vacations and so forth, you need to remember:  
a) some pots actually have had one or more SDs who treated them to these experiences.  
b) some have parents who are financially comfortable and this is what the pots have experienced growing up  
c) some are fake profiles.  
If a pot could actually financially self-support this desired lifestyle they would not be on the site, they’d be spending time living this lifestyle.

 
You need to think about the type of pot you want at any given time and ignore those that don’t seem to fit. Normally I want public and BCD fun. I contact those that seem fun, interesting and looking for this and gear my message towards this and ignore those that seem to be BCD only. When I want a SB for a few BCD sessions, I only contact those pots who’s profile comes across like this and gar my message towards that.

I’ve had plenty of POT SBs who after we met for coffee, ask me to get started right away.  One of my favs she felt a natural connection to me right of the bat.  Surprising to me because she is an athlete in college, hangs out and fucks athletes (boys) but tells me I’m a better fuck and made her have multiple Os the boys can’t accomplish.  I’m an old out of shape man, but glad I can please the girls.