Saturday, November 15, 2025

Will New Revenue Plus Savings Justify $405 Billion in AI Capex This Year?

How much revenue upside can Microsoft, Meta, Amazon, and Alphabet produce from their capital expenditures on artificial intelligence infrastructure? And will such revenue gains justify the massive AI investments?


Keep in mind, those four firms might spend $405 billion on AI-related capex in calendar year 2025, up sharply from prior years. This includes:

  • Microsoft: ~$117 billion (driven by Azure AI expansions and OpenAI integrations).

  • Meta: ~$71 billion (focused on AI training for content recommendation and metaverse).

  • Amazon: ~$125 billion (heavily weighted toward AWS AI services and e-commerce optimization).

  • Alphabet (Google): ~$92 billion (bolstering Google Cloud and AI-enhanced search/YouTube).


So it is reasonable to ask when and how those investments will produce a positive financial result. 


Assuming a three-year to five- year depreciation schedule for infrastructure and a target return on investment of 20 percent to 30 percent (accounting for high margins in cloud/ads), each firm needs to generate $200-500 billion in cumulative additional value over the next few years. 


The burden is reduced if one uses depreciation more like five to six years, of course. 


Some might argue the additional revenue could come from:


Firm

Product Line

Current Revenue ($B)

Prorated AI Capex ($B)

Possible Revenue Upside ($B)

percent Upside

Microsoft

Intelligent Cloud (Azure)

120

58

20 (15 percent uplift) + 8 new (Copilot)

23 percent


Productivity (Office/365)

80

39

12

15 percent


Personal Computing (Windows/Xbox)

70

20

11

16 percent


Total

270

117

51

19 percent

Meta

Family of Apps (Ads/Social)

160

67

24

15 percent


Reality Labs (VR/AR)

2

4

0.3 + 5 new (AI glasses)

253 percent


Total

162

71

29.3

18 percent

Amazon

North America Retail

400

60

60

15 percent


International Retail

140

21

21

15 percent


AWS (Cloud)

100

44

15 + 10 new (Bedrock AI)

25 percent


Total

640

125

106

17 percent

Alphabet

Search & Other (Ads)

198

55

30

15 percent


YouTube Ads/Subscriptions

36

10

5.4 + 3 new (AI creators)

23 percent


Google Cloud

33

27

5 + 7 new (Vertex AI)

36 percent


Total

267

92

50.4

19 percent


Will there be some amount of overinvestment? Almost assuredly. But will the assets be rationalized and produce positive outcomes? Did overinvestment in prior waves of technology ultimately pay off? One tends to say "yes." 

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