You may benefit from watching cgpgrey's keys to power video. The people who you need to gain power are not the same as those needed to maintain it. So a dictator will seize power and kill off all the people who helped him, because money going to those people is money not going to the people who can overthrow you, which is loot that can be promised to them by rivals trying to take your job.

You outlived your usefulness. They have no interest in the long term growth of the company - their job was to get a return on their investment and that means inflating the value at a point in time so that they can cash out.