From their S-1, 2020 revenue was $219m. From that, $106m was cost of revenue, $87m went out to SG&A, and $55m for marketing. Presumably if they wanted to hit pure profitability, they could take their foot off the gas on the admin expenses and marketing, but since they're still seeing good growth and seem to be having an easy enough time getting capital, they may as well keep spending on additional growth.