In the UK, it has been very common for people to wear the same basic stuff every day for decades. It started with your school uniform, followed perhaps by an army (etc) uniform, and then a job uniform.
The job uniform might be overalls or one chosen by a profession (eg nurses) or a particular company (a shop or restaurant or factory, an airline, etc). Not every job leaves you free to wear whatever you like.
In the city of London, and in companies such as IBM, many people adopted a common uniform that they wore every day, even if each person's choice of suit, shirt and tie might be slightly different.
The essential point is that your work clothes are not about presenting you to your colleagues but about representing your company in public.
When I went to work for a company with a more casual dress code, I'd have been out of place in my previous three-piece suit, shirt and tie. After a while, I devised my own style of "uniform" so I could wear the same things every day without having to think about it.
If anybody noticed, they didn't comment. But then, if they were wearing much the same things every day, I didn't notice or comment either. Really, who cares?
It makes shopping simpler: you just go out and buy a bunch of five identical shirts at a time. I sometimes got five-for-the-price-of-four-type deals. (You can haggle.)
I did find it was impossible to have identical outfits because clothes change when they are washed often. Also, companies change long-running designs, even if people don't think they do. In my case, the shirt buttons changed, though again, probably nobody else noticed.
Most companies have an unspoken "dress code" anyway. As long as you stay within that, nobody really cares.