One way to hold this phrase: picture the owner of one small shop on a busy street. She is not paid by the hour and she does not own a factory. She owns one small thing, and she is careful about keeping it. Everything the phrase does grows out of that middle position. First it is a name for where she stands in society. Then it becomes a name for the worries people imagine come with standing there: the neighbours, the address, the sofa.
From the picture
被貼在這個位置上的心態與品味
守著一點點東西的人，容易被想像成特別怕失去、特別在意別人的眼光。久了，這兩個字就從「他站在哪裡」滑到「他在乎什麼」。這是一條說法上的連結，用來幫你記住兩個意思怎麼靠在一起，不是歷史考證。
adjective · C1
Caring too much about money, social position, and the things you own, and judging people by them. Speakers use this word to criticize someone's values as small and narrow.
庸俗勢利的
adjective · C1
Belonging to the lower middle class: people such as small shop owners, small business owners and office workers, who sit between working people and the richer middle class.
小資產階級的