Big companies can make mistakes and their due diligence processes are not infallible, just look at the recent GM and Nikola debacle (see below article) which unraveled after a short seller report came out.

I'm not saying its the same situation here, just making the point that just because a large company makes a conditional agreement doesn't mean its a sure thing.

GM pumps the brakes on its deal with troubled electric truck startup Nikola

Andrew J. Hawkins

3-4 minutes

General Motors ditched its plans to acquire an equity stake in troubled electric truck startup Nikola. GM will also no longer help engineer and manufacture Nikola’s battery-electric and hydrogen fuel cell vehicles, including the Badger pickup truck.

It won’t come as a total shock to anyone who’s been following Nikola over the last several months. Less than a week after GM announced its plan to acquire an 11 percent stake in the buzzy company, short-selling firm Hindenburg Research published a bombshell report accusing Nikola of fraud in showcasing its electric vehicle technology. Nikola founder Trevor Milton stepped down as board chairman on September 21st in the wake of the report.

https://www.theverge.com/2020/11/30/21726594/gm-nikola-deal-equity-badger-truck-hydrogen