Have you ever heard about the housing crisis? The UK for example has a 4.3 million homes deficit. That’s 6.3% of the population if you want to give everyone a house. But if accounting for families of at least two people, then it’s more like 12.6% of the population without homes.
The situation is very similar in most developed countries, especially in Europe. Countries like Italy and Poland have severe overcrowding, 35% of Poles don’t have enough living space (meaning they live in house shares and only have one room to themselves).
So yeah, it is a privilege. Always was. And as the worldwide population grows, housing will only become even more scarce as land is a finite resource.
You literally said:
That’s false. There is not enough housing all over the world, with just a few exceptions like Singapore. But it’s much better than 100-200-300 years ago. And since this thread is about home ownership specifically, home owners are only a fraction of those who actually live in good enough accommodation.
Thus returning to the original point - owning a house is a privilege. Always was and will be for a very long time. First we need to solve the housing crisis and at the very least provide council housing, but that’s not ownership, it’s just a better rent. And if the global population continues to grow then ownership will become even less accessible.