I understand you just fine - I was just pointing out that a private company can also choose to be opaque in a way public companies can't. It probably would have been easier for the KSA to buy a stake had Twitter been private. Incidentally, the infamous "Funding secured" tweet was predicated on funding from the Saudis[1]; so Elon taking money from the Saudi's isn't unfathomable, should he hypothetically choose to sell to them.

1. According to Elon, who now insists the tweet was true.