The economic differences between countries are huge and even the Siglent/Rigols that get beaten over here all-day are complete Rolls Royces for many other countries.
I agree. It is a very good comment and observation.
But that said,
you also have to remember the
opposite; at that same time as Rigol/Siglent are "normal" and affordable for you in your country (and too expensive in even poorer countries), Keysight/R&S could just as well be normal and affordable in richer countries than yours (like northern Europe countries like Germany and Scandinavia, and USA/Canada, for example).
Just like different neighborhoods defines what car brands are normal. Where I live it is a little bit upper middle class, with a lot of Mercedes-Benz, BMW, Porsches and Teslas, but very few of cheaper car brands like Skoda, FIAT and KIA (like in lower income areas), but at the same time also very few really expensive cars like Ferrari and Lamborghini (have a couple in the area, but not many or common, like they have in really rich peoples areas).
Your view and purchasing power, and what you consider "normal", varies a lot depending on where your live, and what you see around you every normal day.