Shares in AT&T, Verizon, and T-Mobile US tumbled nearly 4% in premarket trading following news of the aggressive expansion. The ripple effect reached European markets, where Deutsche Telekom saw a 3.1% decline, while Vodafone and Orange shares dipped roughly 1.5%. The strategy centers on establishing a fourth major mobile network, threatening the market dominance that has persisted since the 2020 consolidation of the U.S. wireless industry.

While carriers faced a sell-off, infrastructure providers gained significant ground. SpaceX is reportedly in discussions with tower operator Crown Castle to support its network buildout, pushing Crown Castle shares up 6.5%. American Tower also saw gains as the market reacted to the potential for new leasing revenue. Although SpaceX did not confirm specific deal details, Crown Castle leadership signaled an openness to partnerships, noting they are in dialogue with various satellite-based providers. This latest market shift underscores growing investor anxiety over the entry of non-traditional tech giants into the established telecommunications landscape.