I mean, yes and no. Every business exists to make profit, but most companies thrive when their customers are happy, not miserable. Many (but not all) microtransactions in gaming, particularly in the more predatory free-to-play models, don't exist for the good of the product, but to offer a relief to the player as the game applies more pressure and pain to try and force the player to cave and spend money. Even the "just cosmetic" microtransactions lean hard on techniques to get the player to spend as much as possible. Both sides of this aren't universal, some businesses are very much "minimum effort, maximum profit" without much care for the quality of their product, and some games take great care to not fall into predatory monetization techniques, even with microtransactions, but speaking generally, it's something that seems rather unique to the game industry.