For fun, discovery, and the social experience of cracking packs together, boosters justify their premium
Naturally, if another artifact with or without a subtype somehow gains the Vehicle subtype, it wont gain any of these specialties just like that
Finally, Chance for Glory
Red decks have access to a lot of rituals, allowing them to add Red into their mana pool to make it easier to cast quickly
Locations passively accrue lore at the start of every turn, and characters can enter them to receive some sort of benefit
Youre more likely to see a value hold on, say, Eternal Witness (which can port into most green decks) than a high-powered green commander (which can only really be used as the commander in one specific deck)