The depth of market is nuanced.
Abhishek grammarly saying there are lot of grammatical errors
An overarching assumption that you have made here is that the entire $X ARPU has to come from the end consumer. If you look at large consumer internet companies (think OTTs, horizontal ecommerce companies etc.), a significant portion of their revenues comes from Ads and other partnerships and not directly from end consumers. Good platforms make almost a third of their net take rate from these other revenue streams, which reduces the burden of selling more to the same customer.