I was in Singapore, Kuala Lumpur and Dubai in last 15 years. I would agree with you, the rapid development years for Qatar is between late 00's til present and 10 years back compared with Dubai.
When you talking about celebrities hub, I wld think different way because celebrity will related with entertainment. Here, we almost don't have public entertainment, no karaoke, no place to watch live sport or popular artist event on screen, all indoor and paid! whereby Qatar only concentrate for family entertainment for high and middle class. We here is likely to encourage to stay at home, play with kids, eat, sleep and leisure at accommodation stand alone compound. Public sport and event entertainment almost none here to attract population, compared with Dubai and other Asian nation, where people gathered in the restaurant, cafe, stall, club, pub to watch football like fiesta, cheer up and down under, but of course no alcohol please! Celebrity hub? ermmm