I can tell you the drag is between your own tools and the real world (which is very messy and inconsistent): taxes, compliance, payroll, amendments, share structures, etc.
Within my island, my books are in order, invoices and time keeping is fully automated, calendars and sales pipelines are connected.
I'm sure there are many businesses whose inner islands are not as orderly. The zillion tools out there all try to bring equanimity to the chaos and yet here we still are with fresh books, quickbooks, and xero...