Not just the first hit in general but this also sounds likely to be a bait-and-switch. They will roll with that free 1TiB as long as they can for marketing and market capture. They have a few profit streams (ads, whales on bigger plans) to help cover those marketing costs. But most likely they will not be profitable and eventually will reduce/remove the free plan and try to upgrade as many users as possible to the paid plan (reducing costs and increasing revenue in one go).