Most likely is that something unanticipated happened at the company.
Anticipated funding didn't come in. Company is pivoting. Or maybe just the founders nephew needed the job that was going to be yours.
Ultimately, the chances of finding out exactly what the root cause is are practically nil. The employer had no formal obligation to you (this is how it generally works here), and on top of that general fear of lawsuits will also prevent them from telling you exactly what caused their change of mind.
It's an unfortunate situation, but your best option is to simply move on( recognizing that it may be less than 'simple').
Anticipated funding didn't come in. Company is pivoting. Or maybe just the founders nephew needed the job that was going to be yours.
Ultimately, the chances of finding out exactly what the root cause is are practically nil. The employer had no formal obligation to you (this is how it generally works here), and on top of that general fear of lawsuits will also prevent them from telling you exactly what caused their change of mind.
It's an unfortunate situation, but your best option is to simply move on( recognizing that it may be less than 'simple').