Can any tutor help to answer this question:

1. Costco had involved itself on technology as in why they don't reduce the amount of warehouse and retail shop by moving them online?
2. In the fives forces analyses, you had mentioned the buyer's bargaining power. As far as I know, Costco will research market analysis to seek for popular products, and Costco will create branded products. Will they affect the supplier bargaining power relationship between suppliers?

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