Not sure why people are arguing Tesla vs Rivian? You guys got it all wrong. When Rivian launches, Tesla will have their upgraded models to 1 up the competition. There's no doubt about that, Tesla isn't just sitting back watching competition come out with impressive specs while doing nothing. But the real story here is that it won't be Tesla vs Rivian. It's going to be Tesla + Rivian vs legacy automakers like GM, Ford, Toyota, etc..
There's plenty of room for more quality EV's in the EV market space. Rivian is really the first BEV revealed other than Tesla where I feel they've got nice design appeal as well as impressive specs. All the others, like Mercedes EQC, Jag I-PACE, Kona, etc.. have outdated specs and questionable design choices. So if Rivian can come out and do it right, build EV's that people will like, with impressive specs and range, then more powers to them. That's what we need more of, BEV's that impress.
The media wants you to focus on "Tesla killers", but it'll really be Tesla and Rivian killing legacy automakers if they don't catch up. I'm looking at you GM & Ford, you can't hide behind internal combustion engine trucks and SUV's forever.