Thanks for your replies.
But I really can't imagine working on a layout vertically while the reality is horizontal, like most of books, leaflet or catalogues. You need to see the final result. And in this case, even the X ruler is 0 on each page, but the Y ruler doesn't begin at 0.
Same for the rulers, I've been doing publishing for more than 30 years and margins, guides and grid are important. But with QuarkXpress, then with InDesign, I always kept rulers visible. And all my colleagues too. Layout are not always handle with grids. Especially when you working on creative document with few pages, all is a matter of balance and harmony between the two facing pages. And then guides and rulers are very important to verify and adjust finely. Then rulers at 0,0 on each page is more intuitive. And if you're working on 3 or more facing pages (X-fold leaflet), it's more and important.
Whatever, it seems this is not possible and it's really a pity. Same for the impossibility to have more than 2 facing pages.