No, way more spammers want them than can get them - most people dont own a domain name hence the word "potential".
Clothing.com is definitely something several people/businesses want, certainly, and having an actual auction for a good multiple users want isn't nefarious, its the "as the domain registrar to prevent middle men from capturing the value I will automatically do it instead" that is.
If you want to make it less so, offer some service to stop ripping off individuals who want to buy one domain - is there possibly of abuse there? sure? but whose making all the money here?
There's no one bidding (except in an abstract sense of wanting to own it all) on the domains I am talking about - they are free to register at any time as long as you can pony up the cash.