Among other differences, a house construction contract is understood to be limited in time.

Imagine the construction company said "record profits this year, thanks for building great houses, you're fired." The message wouldn't go over well. They are being outrageously cutthroat or hiding bad news.

Ive seen this exact analogy on HN quite a few times now, and its a bit odd (read: nonsensical). You dont tend to employ construction workers directly to build your house. You contract a housing company, who contracts construction companies (or has inhouse workers), who do keep their employees employed.