Marconi's Wireless Telegraph Company expanded rapidly, establishing wireless stations across the globe and providing services to shipping companies, governments, and private individuals. The company became a dominant force in the emerging wireless communication industry.

Marconi's company secured numerous contracts with governments and shipping lines to install wireless telegraph equipment on ships and in coastal stations. This significantly improved maritime safety and communication.

The Titanic disaster highlighted the importance of wireless communication at sea. The fact that the Carpathia was able to rescue survivors thanks to messages received via wireless communication proved its importance. While a Marconi operator received the distress calls, the event led to increased regulation and standards for wireless equipment on ships. The investigations found that the closest ship had turned off their receiver for the night, and did not receive the distress signal.

Marconi's company diversified into radio broadcasting and other related technologies. He continued to innovate and improve wireless communication systems until his death.