Matches my experience in adtech, Q4 was always at least half of our yearly revenue. Q1 usually came in at less than 1/4 of Q4.
The story goes that Black Friday was named that because it was the break-over point between where most companies were in the red versus when they turned the corner and were now in the black.
At Whole Foods eStore, during the time I worked there, virtually all of their profit came from Thanksgiving. Not before, not after. Just that one week. Christmas was also something of a bump, but the rest of the year operated at a loss.
should have grown your "how do I pay these credit card bills?" vertical