There's so much polarizing opinion on Tesla's offering and whether they'll get to Waymo's level sooner than later, but this seems like it's going to be or already is a huge issue for Waymo where they can't manufacture the vehicles fast enough to satisfy the demand as they expand both locally (because they capture more of the market) and into new geographies. Will they try and acquire a manufacturer? I don't think that's economically feasible for Waymo (Geely market cap is $25b, per Google snippet fwiw), and obviously being in the car business is different than autonomous, but I'm sure Google would bankroll a purchase if they thought it was the right growth strategy.
I guess Tesla, even if their autonomous is on par with Waymo tomorrow, also has to manufacture the fleet, but it seems extremely beneficial to have that capacity in house vs. relying on partners. Maybe I'm wrong and it's not that much of an advantage, but at first glance it would seem to be.