I don't think this analogy works. What the farmer would sell his farm for ("market cap") is much more than an annual harvest value ("revenue"). Also tech is no

I don't think this analogy works. What the farmer would sell his farm for ("market cap") is much more than an annual harvest value ("revenue"). Also tech is not that special. You could say the same about a factory, which you build once and it churns out cars, or a mine which churns out minerals. And to the extent this is not true, for example factories needing upgrades and labour, the same is true of tech. Software gets old, needs support, and the labour of well paid technologists.