It seems you have no idea about what happened in IPL or about UAE.
UAE is made up of seven emirates, each of them ruled by sheikhs and has their own rules and regulations. Abu Dhabi has the most stringent restrictions and had severe border entry restrictions for people coming from other Emirates, including quarantine and what not.
The whole region was reporting cases around 1000-2000 cases per day and was under partial curfew.
Amidst all this, BCCI managed to get members and staff of eight different teams, conduct simultaneous matches at.different "states" and ensured that the tournament, which spanned months, went off without a glitch. That's inspite of all these challenges and not without it. But like true professional board, they di their homework well in advance and secured necessary agreements with the different actors involved and then executed them perfectly.
I have to chime in here because you are missing some context
1) The UAE relies
heavily on income from hosting events, and have gone way out of their way to make it possible for events such as the UFC, IPL, business fairs, festivals, etc to go ahead. This is a credit to them, not the BCCI.
2) The UAE has decided that around 2000 cases a day is acceptable and have not had any form of lockdown on their own population for many months now, including during the IPL. The individuals associated with the IPL did live under more stringent conditions than anyone else in the country.
3) The Franchises were responsible for managing their players, staff, etc. and the penalty for anyone who violated the bio security bubble was that they would be sent home and the franchise would be hit with a heavy fine. It was not the BCCI coordinating all that, at most they just managed the needs of the match officials and event staff.
4) Due to the size of the bubble and the fact that UAE is renowned for its
slave labour hospitality, there was very little need for anyone to enter or leave the bubble during the event. All hotel and service staff were part of the bubble too IIRC, so it was literally a sort of 5-start bubble environment created by the UAE government in order to facilitate the IPL
5) There were no spectators at the IPL, but there are spectators here. Allowing people into the ground brings with it a whole other set of complications that the UAE govt and BCCI did not have to deal with.