- Do most employees think and accept this is ethical for the longterm of the IT?
- Do they not think it is destroying the reputation?
- Do the employees not think if they later found a browser or other OS - such behavious is immoral from both economic and technological perspective?
You're saddened by the wrong thing. Most employees have little to no power to change anything. Protest is a kind of insubordination that would likely do no good and lead to personal hardship and little else.
The only people with power in a company are the owners and their designated employee-agents (executive managers). Even in a heavily unionized company, employee power doesn't extend much beyond influencing pay and working conditions.
Remember, so many of them don't even use Windows itself. They're so unabashedly removed from the actual user experience that I doubt anyone working with them can change their minds.