The generative AI industry just had one of its ugliest days on the market, and according to Marcus on AI, the trouble may run deeper than the headlines suggest. Gary Marcus, writing in his Marcus on AI newsletter, dubbed Friday “AI’s Black Friday” after roughly half a trillion dollars in market value evaporated overnight on June 5, 2026. The Dow slipped just 1.35%, but the AI-heavy names took the real beating.
What happened
The damage clustered exactly where you’d expect if investors are losing faith in the AI trade:
- Chipmakers Nvidia, Broadcom, and Micron all dropped, with Broadcom’s disappointing earnings forecast cited as the trigger.
- GPU leasers CoreWeave and Nebius fell, along with Oracle, Microsoft, and Meta.
- South Korea’s KOSPI plunged 5.5%. Samsung Electronics dropped 6.4% and SK Hynix collapsed 9.9%, per market data Marcus cited.
Marcus reports this wasn’t even the worst part. The bigger jolt was political.
The bailout question
The Trump administration is reportedly discussing a possible government stake in OpenAI, and President Trump said publicly he’s weighing equity positions in top AI companies. Industry leaders are expected at the White House to talk it over.
Marcus doesn’t mince words about it. He frames the move as a bailout dressed up as investment, writing “In short, it stinks.” His read is blunt: if these companies need the government to step in, it signals there may be “no path to profitability” on the current trajectory.
What stands out here is the geopolitical angle Marcus flags. A US AI company partly owned by the US government becomes a trust problem abroad. Just as Washington won’t touch Huawei, he argues, Europe and Asia may steer clear of a government-backed OpenAI or even Google. His phrase for what’s coming: “The new cold war will be about AI.” He even suggests Google would be wise to refuse, given how much of its revenue is global, while OpenAI may be too desperate to say no.
The Musk tell
The detail Marcus finds most revealing involves Elon Musk. SpaceX reportedly signed a $920 million per month deal to lease compute to Google, on top of 220,000 GPUs already going to Anthropic and another 110,000 now headed to Google.
Think about what that means. Last year Musk was hoarding chips and talking up Grok 5 as a 10% shot at the world’s first AGI. This year his AI division is renting those same chips to direct competitors. As Marcus puts it, “If scale was ‘all you need,’ or if AGI was actually nigh, Elon would be hoarding LLMs, not leasing them.”
The implication runs wider than one company. A friend quoted in the piece notes that if SpaceX bought hardware it can’t use, others probably did too. Capacity got built long before the demand or the use cases showed up. That’s bad news for Nvidia, CoreWeave, Oracle, Nebius, Micron, and the rest of the supply chain.
Why it matters
Here’s the part that should worry anyone tracking the sector. Even Google and Meta, historically cash-rich companies, are reportedly selling equity to keep funding their AI buildouts. The friend Marcus quotes calls the whole thing “a black hole.”
Strip away the market drama and a pattern emerges:
- Returns on AI investment have been limited, and Marcus argues reliability is a big reason why.
- Infrastructure was overbuilt ahead of real demand.
- Some of the biggest players are now propping up the business with equity sales or, potentially, government money.
Marcus is careful to hedge. He admits the “Black Friday” label is partly tongue in cheek, and he says he has no idea whether Monday’s market will keep sliding. But his view is clear: “it should.”
What to watch next
For practitioners and investors, the near-term signals are easy to name. Watch whether the White House meeting produces an actual government stake, watch how foreign markets react to that prospect, and watch whether more cash-positive giants start raising equity to cover AI spend. Marcus has also promised a follow-up on why AI has delivered less real-world productivity than its price tag implies. Full details are available at the original source.