Microsoft can already claim that you can use Excel legally by only ever using it as an expensive calculator or table layout generator.
A theoretical methodology to do so is not enough to make their spyware legal.
There are alternative products that can do almost everything Excel does in almost every real life company without consuming data like the Very Hungry Caterpillar. It's up to them to prove why they need all that data that others don't need, and in what specific ways this data is used for the good of the customer.
Microsoft will need to act and change to solve this problem.
A theoretical methodology to do so is not enough to make their spyware legal.
There are alternative products that can do almost everything Excel does in almost every real life company without consuming data like the Very Hungry Caterpillar. It's up to them to prove why they need all that data that others don't need, and in what specific ways this data is used for the good of the customer.
Microsoft will need to act and change to solve this problem.