Once you are a public company, you need a robust finance, accounting, and HR infrastructure, along with orgs like investor relations. Plus selling ads is tough.

Once you are a public company, you need a robust finance, accounting, and HR infrastructure, along with orgs like investor relations. Plus selling ads is tough. You need a large salesforce to constantly call people and try to sell them, you need account managers to manage relationship with the big advertisers. Now spread these people globally, you are selling different ads in different geographies. In addition, now you need ad operations to track metrics, report on it, and share revenue. This is even before you get into product and engineering.