Startups don't typically go out and look to see if they violate any IP. Likewise, forward thinking companies like Tesla don't typically go around suing startups

Startups don't typically go out and look to see if they violate any IP. Likewise, forward thinking companies like Tesla don't typically go around suing startups for using their IP. They would rather buy them up if they are doing really interesting things. IP lawsuits only get filed if there is a real threat to the business. Telsa's patent sharing announcement doesn't really amount to much IMHO. It was a press release, not a legal contract.