Find: Microsoft now paid royalties on 70% of US Android smartphones

One way to fund a competing os is to collect royalties from your rivals. 

Though interestingly, ms ain't getting any from google, only google's device partners. A flank attack. 

Ars Technica

LG has become the latest in a long line of Android handset vendors to sign a patent licensing agreement with Microsoft. The agreement allows the South Korean conglomerate to use Microsoft patented technology in phones, tablets, and other consumer electronics running both Android and Chrome OS.

This is the eleventh agreement between Microsoft and Android-using OEMs, with other licensees including Samsung, HTC, and Acer. In total, Microsoft says that more than 70 percent of all Android smartphones sold in the US are covered by a similar patent agreement. The only major manufacturer now without a license agreement is Motorola Mobility.

Terms of the agreement were not disclosed, but the form is likely to be comparable to that of the other license agreements, which all involve payment of a royalty to Microsoft for each handset sold.