Portuguese rulers paid the expenses of exploring for trade routes. how did portugal benefits from vasco da gama's voyage to india

Vasco Da Gama explored the ocean  trade route from Lisbon,Portugal to Calicut,India because Portuguese rulers used to pay money to explorers who found new routes. Due to his efforts,Portugal broke all trades with the Arab world who had monopoly earlier in the Indian Ocean. And because muslims had captured as terrorists on Portugal,Portugal never wanted to trade with them in the first place. Vasco was the pioneer who started Europe's trade with Asia and is considered as chief saviour of modern civilisation.Europe would have suffered from barbarism if he had not discovered India.  Pand Portugal destroyed Arab muslims ships when they were coming to India and later they destroyed the trade of Arabs with India.Portugal started sending spices from India to Portugal at much cheaper rates .