I suppose the choice depends on the sort of business one wants to establish and on the budget. If it's a very solid business with a solid budget, I don't think it would go for Dubai. If it's something shady, and you want the smallest number of questions asked while a relatively clean front, then yes, it can happen.
In any case, there used to be
a useful index for choosing a place. It was called the ease of doing business index, and it took into account the difficulty and time of starting a business, getting relevant infrastructure and permits, the tax situation, international trading and other factors. As of 2020, the best countries and places were New Zealand, Singapore, Hong Kong, Denmark, South Korea, and the US. UAE ranked fairly high, too.
Living in someone else's country is not at all like living in our own country. When we migrate to another country, we are not provided with all kinds of facilities. We have to pay more taxes on everything. We have no nationality. Given that we face a lot of difficulties in setting up a business and running it successfully, it has to do with money. You have enough ability to double that money then it's your own personal choice you can go but I don't understand why people who have enough money to start a business, instead of migrating to another country, should do it within their own country.
As far as I know, the current situation in the whole world is not stable for businesses and, especially, it is not so easy to go there and settle down and start a business successfully since it would take a lot of time and efforts, and of course, money.