The problem they're facing with the big bets is that they can lose big as well. With iPhone sales dropping 30%/year, they're losing about that much revenue als

The problem they're facing with the big bets is that they can lose big as well. With iPhone sales dropping 30%/year, they're losing about that much revenue also, since the company's revenue is tied so much to that singular product. A broad product portfolio will always be more stable over the long term.