No one said they were constrained by money for current products. You can always take on more projects and spend more money.

Apple, for example, is always extremely focused. Their products fit on one table.

Google's moonshots could get very expensive, especially if they venture farther into healthcare.

$20 billion R&D budgets can't be too hard to achieve. http://fortune.com/2014/11/17/top-10-research-development/