Does many users actually buy the Golden Tickets? Or just get them for wagering? You get a free Golden Ticket for every 500,000 sats wagered. I have to think most are gotten that way.
I believe most users just earn GTs through wagering. This way they still have a chance of growing their funds, while accumulating Golden Tickets. For whales it's an easy source of GTs, which also generates extra RPs, which can be exchanged into more satoshis. Moreover, there are rewards for users who wager the biggest amounts of money as well.
On the other hand, to purchase GTs don't imply any side effects, or extra rewards, benefits. Therefore, it's not advisable.
Not that accumulating GTs mean something important nowadays, though...