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It’s getting more costly for Alphabet (formerly known as Google) to buy friends in the tech world. Currently Alphabet pays companies like Apple to setup its Google service as the preferred search engine in their browsers. The costs for this privilege are rising, and Alphabet’s investors aren’t very happy about it. Dan Gallagher writes for the WSJ:

For Alphabet, the main issue for investors is theย rising costs that Google has to pay partners to direct traffic to its sites. Those traffic acquisition costs totaled $21.6 billion in 2017โ€”up 29% from the previous year. That outpaced the 20% revenue growth for Googleโ€™s core advertising business for the year, which weighs on the companyโ€™s profitability. Alphabet CFO Ruth Porat noted that the growth rate of these costs should start to moderate early this year.

Read more here.