Everyone complaining about the difficult progression and money losses on a loss, and then saying it is a bad business model. I disagree, as a long time WOT player I can tell you that without having a premium account (Elite) you would not progress past tier 7 and you would lose coin in tiers 9 and 10 on a loss and sometimes on a win.
How does talking about the other game support the argument? It speaks to the business model. WOT is one of the most successful games of all time. If the game design is solid and the game-play is engaging then it is the very business model you want to go with.
I am enjoying the game so I have spent money. When my small purchase 7 day elite status is up I will likely renew for 30 days and if they can keep me interested then I will continue to renew.
Talking about FTP is kind of pointless as no 'ftp' game truly is and if that's what you are looking for then you need to play some resurrected private server for EQ or some other, thought to be dead, game from the 90s.