None of these companies have the capabilities to collect a lot of data. Ergo, they will not say they need a lot. It's pretty obvious.
Assessment of what the "correct" approaches are should be made without influence of what any company says (including Tesla), because they are all biased.
What does lots of data means? Before tesla fans say it as acouple thousand cars, then 10k, then 50k, then 100k, then 500k, now 1 million.
Next year they will say anything under 2 million cars collecting data is worthless.
So no, so far, its basically influenced by whatever Tesla is doing.
But I would love to hear from you what lots of data consists of factually without Tesla bias and influence.