Apple’s quarterly results showed its continuing transition to being a services-led company, as growth in the smartphone market slows. This will bring it into conflict with Amazon and Google even more directly than in the mobile space, though the latest area where the search giant is taking on Apple is actually in a hardware category, wearables. Here, Google is to pay $2.1bn for Fitbit, a veteran of the tracker and smartwatch markets. Fitbit’s Versa family of watches has been squeezed this year by the growth of Apple Watch, but it has robust technology, which may be the foundation of a future Google Pixel Watch. Although plenty of watch makers use Google software, the search firm has not produced its own…