Multi-Touch Attribution (MTA) is the best thing to happen to attribution since last touch (aka last click) attribution for digital campaigns. In essence, it is a methodology for assigning a value to the various touchpoints on a consumer's path-to-purchase.
However, MTA and last click are incredibly broken religions of marketing online. The most frustrating part is that everyone (yes, everyone) knows that it is broken, yet we keep using it.
The excuse, time after time, in agency conference rooms across America is that there's no other way to transact. We've all agreed to this mutual insanity simply because there isn't been a better way to buy and sell media.
There's at least a dozen better ways to evaluate media spend, calculate ROI, and assign credit. Unfortunately, these "other" ways have not been adopted into the mainstream. The transaction parties involved (agency and seller) actually have very little incentive to come up with a longer term
Yet here we go, quarter after quarter continuing to defend this broken, antiquated way of doing business. There is herd mentality that is fosterd by incumbent agencies and adtech platforms such as Google Spotlight that control today's marketshare. Any oxygen available to offer up an alternative way of transacting is sucked right out of the room.