games are incredibly expensive to make, mmo's (and not-really-mmo-mmo's) even moreso. sot has been in development for at least two and a half years already; undoubtedly it's been longer than that, but we know by launch it will have been in production at least three years. that's a lot of employee time, equipment, website, forum, marketing, and general production costs to cover. and if they plan to continue to release content post-launch (as they've said they do) on top of normal server and community management costs, they have to be able to cover that, as well. without a leveling system or subscriptions, there aren't a ton of monetization options outside of up-front cost of the game. a lot of games add cosmetic items in cash shops (which are expensive and risky in and of themselves), but with cosmetic upgrades being the "leveling" of sot, that may not be an option, either. not to mention gamers are on high alert for lootboxes and anything that even halfway smells like p2w.
the game is also marketed first and foremost to xbox users. i'm on pc myself, but by all accounts we're an afterthought. so they're naturally going to lean more towards a console price range. there are other new games are priced similarly in the australia shop.
all that to say: the game must be profitable in order to continue a live service.