Linus behaved as dumb and deaf the whole time. He wasn't becoming a CEO for any power or position. He wasn't doing it for the company or to take revenge on Casper for threatening Elder Collins.
He considered the position for Alvin who believes in him. He changed his mind about Krystle who encouraged him and proposed that she will take care of his startup. He accepted Alvin's plan because his father was willing to fulfill his dreams.
Apart from that, Ean's words stuck in his mind. If he smoothly manages the Matthews Industries and becomes successful, high-profile people would try to impress him and donate to the NGO. Or else, he will be in a position to influence people and bring light to social issues.
He wasn't sure if he was overestimating himself and everything. Despite knowing Ean tried to trick him, Linus chose to step forward. Not by killing his dream, but hoping to use the opportunity from a different perspective.