Google has become world's most valuable brand, as per the Brand Finance Global 500 report. This ends Apple's domination of the top spot for 5 yrs. Apple comes at the 2nd spot, followed by Amazon AT&T, Microsoft, Samsung and Verizon. The report says that Apple 'over-exploited the goodwill of its customers', adding that instead of material changes, Apple tried to satisfy its advocates with 'tweaks'