How on earth is home insurance so cheap in the UK?

In the US, the average policy is around $1,500/yr, the deductible is $500-$2,500, and your rates will go up the more claims you make -- so obviously nobody uses it for a damaged phone.

I'm baffled by how UK insurers could possibly turn a profit on insurance... if people were filing a claim for every piece of technology they owned every time they accidentally damaged something, it seems like that alone would make it unprofitable. Not even accounting for, you know, actual theft and home damage.

I feel like something's missing here but I can't tell what.