TDI 130PS Sudden death after 2 years???

Hello, My TDI (130hp) Sharan BJ 2004 was 500 km after the last big service with timing belt exchange without any sign of a problem before with engine damage. In the VW workshop (the same one that previously did the service) I was told that the engine was no longer to be repaired. It almost no longer builds up any pressure. It probably also does not create unnecessary costs, by building everything apart to see what exactly happened. I find all this The car ran almost 150 000 km, but mostly on Swiss motorways with 130 kmh. So he was never tortured. All service intervals were done at VW, which was not always cheap. Do you just have to accept that? Had bad luck and put down 8000 EURO for a new engine? How can this happen so suddenly without any sign before? Thanks for every experience / hint that helps me to understand this better.