There is a small element of that.
But (my opinion I guess), as Ticketmaster/Music Industry has shown and now FIFA with the World Cup ticket prices, its becoming more and more about gouging as much as possible out of "customers" and if there are any third parties making themselves some coin then they want them squeezed out of the equation so that they can have the profits themselves.
SAFC have installed the Ticket Resale option for home games now. Whilst it might not be much, for every ticket resold, they make extra revenue from it. The bigger clubs make a lot more revenue than SAFC as well from such Ticket Resale options.
Reality is, the passing on / reselling of tickets will soon follow the same path and be made (almost) impossible to do unless you follow the official path.
Whilst there are loads on here moaning about people passing on tickets etc, in the +35 years I have been following SAFC, there has always been people asking around for spare tickets and there has always been people willing or able to help out their fellow supporters as best they can. Never has this culture of "I'm a better than someone else" really been too prevalent in my opinion. At least with the changes coming it will satisfy that culture, but at the same time its going to make it real difficult for a lot of very dedicated exiled supporters who often make up a fair number of our away support at the longer distance / London games which will be a real shame (got to know a fair few over the years and they're some top people amongst them).
But as long as we are controlling people and getting more coin out of them then all is good.