Starbucks Taiwan’s decision to charge for drink customization, which had been free, has sparked consumer backlash, highlighting the challenge of raising prices without making customers feel they are losing value, experts said.Since Oct. 12, customers who order drinks with less or no ice and ask to h. Add TT as Preferred Source Starbucks Taiwan’s decision to charge for drink customization, which had been free, has sparked consumer backlash, highlighting the challenge of.