According to @business, investors have poured unprecedented sums into artificial intelligence while OpenAI, Microsoft (MSFT) and Meta (META) step up spending, prompting concerns over whether these investments will pay off (source: Bloomberg/@business tweet, Oct 4, 2025). The coverage highlights rising AI capex concentration in Big Tech and frames a growing “AI bubble” narrative that traders can monitor for headline risk around AI-exposed equities (source: Bloomberg/@business). The report focuses on Big Tech AI investment rather than direct cryptocurrency dynamics, implying any crypto impact would come via broader risk sentiment rather than specific token catalysts (source: Bloomberg/@business).