Fact is a business needs to make money and the majority of people don’t work efficiently from home
The first part of that sentence is correct. The second part is inaccurate.
SOME people don't work efficiently from home (and at the moment many people are trying to work at home without childcare, which some employers seem to be forgetting).
I work from home anyway but my husband has found it quite difficult. I imagine that he may well go back the office one day a week once restrictions are eased (and the office is reopened) but he will need to use overground train, and then, to avoid the tube, will have a 50 minute walk, so it won't be something he wants to do every day. But one day a week will help him get things done that are difficult from home.
I would have thought that a part-time return would suit a lot of people especially if it means public transport being (a lot) less busy (and roads, come to that, and maybe if the roads are less busy people can cycle to work).
Employers need to demonstrate flexibility and common sense. The virus is not going away. I don't think we'll have a vaccine any time soon so we need to learn to live with it in a way that balances the risk of the virus with other risks. But saying everyone has to come into the office 5 days a week from eg 1 June is just stupid and is all about control and bottoms on seats.