>Why would you ever expect that you would have a choice of what products you use at work?

Umm Because of worker protection laws? For example the Betriebsrat has the right to have a say in this. Second what if the product is very much inferior and the whole company would be more productive with another product?

> You are being paid to work there.

Yes and that means if I see an improvement opportunity or if I have concerns I will voice them. I'm being paid to improve the company, not be a cog in the machine.