Google's capital spending is growing much faster than its revenue.
Alphabet said in Monday's earnings report that Google's capital expenditures, which include the costs of data centers and other facilities, more than doubled in 2018, that fastest expansion in at least four years.
While the vast majority of Google's revenue comes from advertising, the company has been picking up more business from cloud applications and cloud-based infrastructure, which requires data center equipment. Google also continues to hire rapidly across the globe, requiring it to buy and lease more space for people to work.
https://www.cnbc.com/amp/2019/02/04/googles-capital-expenditures-doubled-in-2018.html
https://www.androidauthority.com/google-q4-2018-revenue-950239/amp/