As Hong Kong tries to reboot its economy amid the coronavirus pandemic, can the Greater Bay Area provide opportunities that are ripe for the taking? In the final of a three-part series ahead of the city leader’s policy address, Denise Tsang and Kathleen Magramo look at how mainland visitors could revive the battered tourism industry. Read the first and second part of the series here.Ngong Ping 360 has been a sad sight for most of this year. Its famous cable cars have been mostly empty going up…