By Deborah Mary Sophia, Akash Sriram and Jaspreet Singh (Reuters) -Three of the biggest U.S. technology companies flagged plans on Wednesday to accelerate capital spending over the next year but investors were most accepting of Google-parent Alphabet's ability to fund its plans from its cash flow. Alphabet, Microsoft and Facebook-owner Meta all announced plans for higher annual capital expenditures as they pour money into chips and data centers. Shares of all three have risen substantially this year on expectations that they will be winners in the AI race, but investors only cheered Alphabet's report as they calculated the costs to each firm of the investments. All three reported stellar revenue growth in their key businesses. Alphabet shares rose 2.8%, while Microsoft fell 2.3% and Meta s

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