I disagree. The world isn't about to end...
Some businesses may be about to fail...but I would imagine they are few. At least in my industry (engineering), current projects are agreed and paid for in stages. In our circumstance, those who can work from home (including me), can continue to provide value to the company. Those who can't; i.e our workshop staff, continue to work under government guidelines, or don't. The company should then receive recompense up to 80% (apparently...though who can believe the Tories).
The only situation where companies will go bust are those whose overheads are so high, that their salary costs are inconsequential. Even then, they would surely have some mitigation in cost.