For several years, investors have rewarded large tech conglomerates in the "Magnificent Seven" that announced plans to ramp up capital expenditures for artificial intelligence (AI) infrastructure. The thinking was that these companies would only make such a large investment if they believed it would yield strong returns. However, in recent months, investors have begun to question whether the returns would really be as promising as many initially believed. Suddenly, AI capex was no longer rewarded, especi ...