PDVSA is not concenred about throwing 20 odd millions on an F1 team that is touring the world showing their name , its business is in billions
how do you know??? a team that is doing well at the front of the grid is always given more TV time than that of a back marker. that's how FOM works. have you seen williams lately on coverage??? apart from maldonado crashing or bottas helmet cam??? now compare that to the amount of time we see black-gold lotus or red ferrari.
getting enough TV time is the reason why slower teams send their cars early on a green track or in wet condition. do you think they like the work of a sweeper??? also, if PDVSA was just satisfied with their name plastered on a corener of an f1 car, then why bother paying 20+mil for maldonado??? they also have PDVSA logo on Marussia too.