Bungie has never used dedicated serves, I don't really see them implementing them now. Plus those networks are expensive, having a "shit ton" of money may not necessarily cover them and still give the companies profits, especially if they aren't covered under their contract costs.
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The publisher provides dedi servers. Destiny doesn't need them, because it's casual. BO3 has dedi servers on ps4, because it's a competitive shooter.
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Publishers do not provide servers, they and the developing company decide a budget based on what they want to do and what's feasible. A game being "competitive" or not does not decide if they have dedicated servers in their development budget.