We've experienced this. We went on to buy a better house fairly quickly.
Of course people re-negotiate after survey - where the survey shows up structural or serious problems that weren't obvious on viewing and wouldn't have been expected in that age of house, if reasonably maintained. Sounds like OP's experience is exactly this.
In our case, the house hadn't been maintained, things not checked or replaced. There were rotten joists, damp and some other things that required immediate repair. We'd have had to do them before moving in, as lots of floors needed to come up, so delaying moving by a couple of months. Costed the work and delay at £14k gave sellers the costings, they declined to negotiate, we'd offered high already, so we walked away.
They were in no real hurry to sell and didn't seem to understand that houses need to be maintained. They'd been there 30+ years. They saw other houses in their street, in tip top condition, go for a certain price and thought theirs was worth the same. It wasn't. I saw it back on the market two years later, don't know if it they managed to sell it that time.
There were lots of other things we'd have wanted to change or update with that house but they were visible and some were about our preferences, not necessity, so we'd taken account of those before offering of course.
The house we bought had it's own problems (major issue that didn't show up in our survey, sued surveyor, won) but, is essentially a better house (South-facing garden, better location etc).