I mean, it's not like people are never going to travel again or eat out at restaurants. But I certainly wouldn't want to be a travel startup or restaurant startup (at least of the dine-in variety) today.
But the current situation is not the norm, people will eventually get back to travelling a lot, and when they do there will be plenty of economic activity to support large companies in the travel business.
I've had the same thoughts about the restaurant industry. Will lockdowns create a generation of home cooks, or will be so tired of staying in that the restaurant industry booms after this is over?
The startup I worked for until last Thursday is going through this. Despite most other startups in the space folding and the sales team finally getting traction with lots of buyers giving a path to becoming a viable business, those companies that were eager to sign contracts a month ago are having to rethink their cashflow and deciding if changing anything in their existing business is worth the risk.