Smartphones are driving growth in the technology industry, but Research In Motion is on the losing side of the equation as competitors' dominant ecosystems continue to lock them out of valuable market share.

The latest blow: Immigration and Customs Enforcement issued a report explaining its decision to ditch RIMM, citing the company's dwindling market share and the effect it has on third-party vendors. Analyst Andrew Tonner explains why investors' attention should be focused on Apple and Google, which currently own a combined 85% of the mobile market share.

Andrew Tonner owns shares of Apple. The Motley Fool owns shares of Apple, Google, and Microsoft. Motley Fool newsletter services recommend Apple, Google, and Microsoft. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.