I have just finished reading a book edited by Michael K. Connors and Ukrist Pathmanand "Thai Politics in Translation" (NIASPress, Cophenhagen, 2021) and am now reading Puangthong Pawakapam's "Infilitrating Society: The Thai Military's Internal Security Affairs" (ISEAS, Singapore, 2021). What is clear is that the Thai (read Bangkok) power elite do not want change, as the status quo benefits them. Creating positive mythologies about the great wisdow and morality of ruling family, and mythologies of ignorance and stupidity of the working classes (read the peoples of Issan, Lanna and Pattani) making them unfit to participate in "democracy" (read decision-making), as well as mythologies of government officials as the moral agents enforcing the will of the ruling family justifies the status quo.
The military, especially through ISOC (which has been around since the mid 1960s and founded, under US military advice, to supress communism) seeks to mould the thinking of Thai people (ISOC officials visiting all rural schools to teach Thai children right thinking and behaviour) and to respect the moral authority of the (Bangkok) ruling elite.
Of course, now the super rich (Chinese-) Thai business families have a marriage of convenience with senior Thai military personalities (from different factions - thus hedging their "bets") for mutual benefit (of course, similar "marriages of convenience" date back to the times of Rama 4 and Rama 5). The "system" will not change unless this "married couple" will gain mutual advantage from the changes.
These traditional elites are using successful old-and-tried methods to maintain thier control and wealth; but in the age of modern technology, these methods are starting to fail, as the old military leaders cannot adequately adept to the age of "5G".
The Thai economy needs to adapt, increase productivity, increase innovating, and encourage the people to work for a great goal that benefits all. But for many youth, the establishment's "killing" of Future Foward Party destroyed hope fo a better future; so why should I work hard for a future that does not exist and an establishment that enslaves me?