When the bubble pops

In 2000, a Finnish IT company TJ Group announced a large scale stock issue, the result of which was that the main stock holders Jyrki Salminen and Tuomo Tilman, who were also running the company, walked away with 130 million euros in total. After the stock issue, the price of the stocks droped to be under 1/100 of the price in the issue. Economically not so big thing was that I personally lost thousands of dollars---money to Jyrki's and Tuomo's pocket. Recently, Jyrki and Tuomo were fined for delaying the announcement of information about the results of the company before the issue. The fines were only about 7000€ each. After buying fancy sport cars and other luxuries these fines just make the guys laugh. They can pay a noticeably part of the fines just with the money I gave them in the issue. Here in Finland, people think I was stupid to invest in the company. In the States on the other hand, they would say I am now experienced. As painful as it is to know that Jyrki and Tuomo got a way with their trick, at least I can console my self with the fact that I was not the only one who lost and that I was still wise enough to sell the stocks after their value had dropped 40%, not 99% as my friend did. What can everybody learn about this? Sometimes you just have to admit that you made a wrong decision and the sooner you do that the better.