"Why management took all this time to file the law suits?"

You've asked this question more than once.

1. Initially they were trying to do business with everyone who ended up being thieves.

2. When they realized what was happening they did not have the funds to hire a firm to go after said thieves.

3. No firm would have taken the case on contingency at that time.

4. Today is a different matter, flash has permeated the tech market.

Coyote