Earlier quoted context omitted.
That's unnecessary. I'm simply demonstrating that unionization has occurred in businesses far larger and with arguably more difficult organizing environments than Basecamp (with a total of ~60 employees). 800 Google workers thought it important enough to join their union.
800 out of 135000 is 6 tenths of 1%. A Basecamp union organizer who was the only one to decide to join their own creation of a Basecamp Workers Union would already be 3 times as successful as the Google union on a per-capita basis.
It took decades for America to ruin the idea of unions, they’re not coming back overnight.