The end of Snap and Tesla

Not much to say about Tesla (haven't been following the story), but one thing that I don't get with Snap is why don't they cut their overheads to try and get back in profit, instead of chasing the impossible dream of getting back to Instagram-levels of growth?

It seems like their platform is already built, they have some ways of making money (ads, sponsored filters, etc), so surely the easiest option is to cut overheads and at least make some money, instead of burning the little of it they have left?

Same thing for Twitter. Last time I checked they had thousands of employees; yet the platform is stagnating and getting worse every day. If they can't innovate, it seems wise to at least cut their losses and try to make some profit with whatever they have left.