@Soniasthetics, I'd love to know where you're getting your data on the reason most people using VPNs to access the site are doing so.
Yes, we all know there are trolls.
We also know there are people who travel a lot and don't trust public wifi connections (with good reason) and just run a VPN for everything when they're on public wifi.
We also know that there are people who just prefer to use a VPN for their own privacy for everything they do. My father-in-law works in cyber-security, and he uses TOR via a VPN for everything.
We also know there are people in countries that block chess.com or have blocked it in the past.
We also know that there are people who would face serious consequences from the authorities in their country if they are caught expressing certain opinions online - and yes, some of these opinions get expressed on chess.com in clubs and forums.
I'd love to know how you can be so confident that the trolls vastly outnumber the other legitimate users.
We also know that taking away VPNs would just push the trolls to use another tool. It would make it harder for them, but the determine ones would find a way around it. So blocking VPNs is a heavy-handed tool that would cause significant harm for a not-insignificant number of people, and wouldn't even accomplish the intended goal of stopping the trolls.
And it's not just a financial decision. Due to U.S. government sanctions, chess.com cannot accept payments from people in certain countries; thus, some of these countries, there are no premium membership fees. And advertising revenues from views from these countries will not be significant; you have to get a ton of view to have meaningful advertising revenue.
Considering how infested the forums are alone with trolls I don't think I need to find you a scholarly article showing you that VPNs are being abused a lot by people accessing the site.
You also haven't named the countries that are currently blocked from accessing the site either. You're asking me for data but you haven't provided any yourself.
as for your argument that its pointless to implement a VPN block because it wouldn't stop the problem, I already mentioned how making things harder for someone is going to discourage them from doing it, and if they try and find another way, that could even open up chess.com staff to investigate how the trolls are constantly getting in. There's all kinds of benefits to blocking VPN use to the site.
but like i said, the main reason none of this gets considered is money. When the model of the site is such a way that you can just sign up and and in 20 seconds you're pretty much a full member, and you're seeing ads plastered everywhere, yeah, I'm not going to believe you when you say that the primary reason isn't financial
The reason I know this is because lets say for the sake of argument banning VPN's isn't a viable option, so why hasn't chess.com put any restrictions on new accounts? why isn't there any sort of management of new members?
There are multiple countries that have blocked access to social media sites. I'm not sure if any are currently blocking chess.com, but it's been blocked in China at times in the past. Would you really argue that nobody in China should be allowed to access chess.com? That would include not just random casual players but also some prominent GMs.
And blocking VPNs wouldn't even be an ironclad way of getting rid of retread trolls. There are other tools they can use to mask their identity.
Here's one interesting sidenote example - current and ongoing. Since last July, Polish members of Talkchess have been cut off from the Talkchess server. The reason for this is debatable, but it *IS* happening. Using a VPN would be one possible way for a Polish member to access the Talkchess server.
http://talkchess.com/forum3/viewtopic.php?f=2&t=74393