Someone explain to me: how do tech stocks lose money and trade high?

I’ve noticed a few stocks on here , the particularly high growth ones. NET, CRWD, U, MTTR, SQ, To name a few . many of these companies were once trading at high multiples , some still are yet most of these are losing more and more money yoy, why is that?

Why invest in a company that just loses more money as it grows?

When are these losses expected to stop?