"I am amazed at the longevity of some brand names.
People don't call it correction fluid,
they call it Liquid Paper, regardless of the brand.
People don't call it a felt tipped pen,
they call it a Texta (in Australia).
When I ask for bourbon and coke,
I don't actually expect Coca-Cola.
Et al."

Not everywhere 'berto. Correction fluid here (not that you get it in offices much anymore) is called Twink - again a brand name.
We don't have Texta's here, they are felt pens or markers/marker pens.
As for the bourbon and coke I heard some years ago that Coca Cola actually employed people to go into bars and order a coke mixer, eg bourbon and coke, rum and coke, etc and check that they were actually served coke and then would prosecute the bar if it wasn't.

Other brand names that have stuck (at least here in NZ):
I have heard people say they are going to 'lux the carpet' (shortened version of a brand of vacuum cleaner, Electrolux). I have also heard that some people, particularly in the UK, still talk about 'hoovering the carpet'.
We don't have shoe polish, we have Nugget.
My mother still calls her food processor her Kitchen Whizz, which was the first brand she owned of that appliance.