Unverified50% confidenceFactExact time

Outdoor advertising signals corporate strength through high-cost public acts, a concept in marketing known as "Signaling Theory"

1

Sources

50%

Confidence

Long-term

Relevance

8/9/2026

First Seen

Sources

AI广告牌占领旧金山：科技泡沫信号还是城市焦虑缩影

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