There's so much happening even in the farm-to-table space where chefs have finally taken to learning/understanding how the vegetables/fruits are grown, how poultry/meat is reared, how the dairy products are made, etc.
There's no denying that the only way for restaurants to stay in business is to hike rates to subset the impact of inflation, but it's not an ideal choice as, ultimately, the customers suffer and the business as a whole would start to suffer too.
Bringing in large variety and personalisation in the menu, is neither scalable nor profitable for restaurateurs with their existing dine-in business models.
If we look at data, around 26 per cent of millennials are vegetarians and also 10 per cent of the world's population follows some kind of vegetarian-diet.