I agree. Personally, I think there's a 50/50 chance that Tesla is an independent company in 5 years, but it really doesn't matter. The worst case scenario, I think, is as follows:
1. Tesla can't get the cash to complete the Model 3, Gigafactory etc... Elon and group would realize this long before it becomes public.
2. Elon and group start quietly fishing around for some deep pockets.
3. Some public rumblings come out and the stock starts to tank.
4. At some point the stock becomes attractive enough that somebody - Apple / Google / Mercedes / Chinese buyer decides to buy them out. Existing shareholders might take a bit of a bath.
5. Tesla brand, service, support and Superchargers continue, perhaps even with Elon in a somewhat chastened role.
The company/brand/technology is too big and valuable for it to completely die now. Nothing is more valuable than an enthusiastic mob of fans that are willing to reach deep into their pockets to pay a premium to buy your product.