In finance and so the world we live in, the value of an equity is less related to the merit of the product than the firm's capacity to generate future free cash flow. Software companies, B2B SaaS in particular, have been basically unbeatable in this regard, hence the state of the market (and our salaries) for the past few decades. Industrial firms have to use metrics like "EBITDA" to show how much cash they'd have to potentially pay to investors if they didn't have to pay so much in interest on their debt, taxes, and fixing up decaying equipment...