Why 'unicorn' companies don't appreciate the 'organic, non-fast foot, non-money-burning' way to do marketing? (e.g. word of mouth) Why are them so keen on usin

Why 'unicorn' companies don't appreciate the 'organic, non-fast foot, non-money-burning' way to do marketing? (e.g. word of mouth) Why are them so keen on using investors' money to bump up 'sales' as further investment into 'cash flow'? Why are their primary goal be money-making?