> It's net revenue, not "revenue",
Check the financial statements again. The $26.5b figure you cite is gross revenue, of which $24.4b is operating revenue. From that revenue you deduct the $19b cost of goods sold (including salaries) to find $7.5b of operating profit, and from that you deduct depreciation and administration expenses.
New investment does not show up as an expense on a financial statement, since it builds capital -- at the accounting level it's a transformation of one asset (cash) to another (land/equipment/etc).
When Amazon made zero gross profit for a decade (or was it two?) it wasn't because they weren't making profits.