Sigfox, a French startup that raised $300M+ to build a communications network for IoT devices, files for bankruptcy, citing slow sales and supply chain issues
We are continuing to see fallout from the Covid-19 pandemic and its impact on the tech industry, with one of the latest developments coming out from France.
Context & Ripple Effects
Sigfox spent a decade converting venture capital into physical infrastructure: a $113M round in 2015 backed by Telefonica and NTT Docomo funded a dedicated low-power network for connected devices, followed by a $160M Series E at a reported $637M valuation with around 10M devices registered. The company then pushed internationally, announcing an expansion to 100 U.S. cities.
The bankruptcy filing closes that arc: the capital-intensive bet on building a proprietary network never converted into sales fast enough, and pandemic-era supply chain disruption hit the device side that feeds such a network. It is one of the clearest failures among the first wave of purpose-built IoT connectivity providers.
First-order effects
- Investors including Telefonica and NTT Docomo, who anchored earlier rounds, are facing near-total loss on more than $300M deployed into the network build-out.
- Device makers and operators with hardware registered on Sigfox's network lose their connectivity provider and must migrate to alternative networks.
Second-order effects
- Carrier-investors like Telefonica and NTT Docomo now have less appetite for backing proprietary IoT network startups, pushing them toward connectivity models built on their own existing infrastructure.
- The failure reprices the category: any remaining dedicated IoT network operator must justify its separate infrastructure against rivals that ride shared or licensed networks at lower fixed cost.
Third-order effects
- If the pattern holds, IoT connectivity consolidates around networks that already exist — cellular operators and standards-based alternatives — rather than single-purpose builds requiring hundreds of millions in fresh capital.
- For France's startup ecosystem, the collapse of one of its flagship deep-tech companies sharpens scrutiny of how mega-rounds into capital-intensive infrastructure get underwritten.
The trend: Purpose-built IoT networks built on massive venture capital are losing out to connectivity layered onto existing carrier infrastructure, as Sigfox's bankruptcy shows.