Spain is basically empty outside of the larger cities, and property prices are often very low, so it is different.
The Netherlands is perhaps a better example. Very high population density, technical challenges due to a lot of reclaimed land, high property prices.
If they can manage it…
The Netherlands has plenty of normal rail, but actually hardly any high speed. Same problems…
?
Don’t believe me, have a look for yourself:
Valencia, Murcia… it’s quite easy to find a house for under 10k. You’ll have to renovate it, but still.
I can find a house without renovating for under 10k in bumfuck England too, does that make property in the UK cheap?
Instead of saying “Valencia or Murcia” why don’t you go have a look where people there actually want to live, especially all the British “expats”, like say, Benidorm? How’s finding something bigger than a matchbox for under 10k there going for ya?