This is silly. That Sino owns 80% means nothing? If one looks at the top 20 hotels in Hong Kong or any major city pretty much anywhere one tends to find similar owners, i.e. corporate or investment groups. AFAIK SIno has has a big chunk for some time, and yes they also own the Fullerton in Singapore (and now Sydney), they also own majorities of several other hotels in HK, any of which they could make a Hilton if they chose to. Like many of Swire's projects, Swire often dilutes themselves down from majority to sometimes controlling, sometimes not, in any case they built/maintain and run Pacific Place overall.
Even if true, I have very fond memories of the Hilton Hong Kong......which was ultimately owned by Li Kashing. One day he decided that he wanted to build a bigger better building on that site, he bought out the rest of his deal with Hilton and knocked the hotel down, and a few years later we had the Conrad instead. If that were to happen again (which I doubt) maybe we might see finally a dozen Hilton properties in HK, rather than just a high end one on the island, and a low end one in Mongkok.