In catering it's obligatory for the company to provide food
Absolutely - providing food isn't compulsory when staff can just wander off to a local shop and get a sandwich.
However I have seen plenty of worksites where it is provided - because you need your staff to not waste a massive part of their day getting food offsite. I've visited sites where the security / sign in / clean-up protocols are so extensive that it isn't workable for staff to get lunch off-site and get back to work on any realistic timescale.
Also how isolated is the site? - Carrington is in the middle of nowhere and you would have to manage cars leaving the site and rejoining it - with additional security implications of managing this with fans / media camped outside.
So once you HAVE to provide a lunch for people you also have to offer a degree of choice - it can't be a one item menu if you are providing it for more than a handful of people - so allowing other staff to choose from the remaining options helps reduce the overall food wastage of running a canteen.
If you want players to be fed good balanced meals, in a secure training environment, away from the glare of the press, then you accept the running costs of running a proper food service.
All of this is total smoke and mirrors to try and detract from the billions wasted by the Glazers and the millions already wasted by INEOS in their short tenure.
Let's see detailed breakdowns of...
Car allowances / expenses claimed by senior executives.
Hospitality expenses claimed by senior executives
Compensation paid to executives when hiring / firing them
Severance packages paid to staff under NDA's
Costs of other redundancy packages
Increasing Agency costs
Penalty costs of ending commercial deals ahead of schedule
I suspect that will amount to way more than a food items in a canteen.