Yes
I think the funds raised by the selling of all those shares can be quite useful to innovate in technology or to fund public services.
This sell offers a great opportunity for people who don't usually invest in the stock market because the shares can be sold to anyone and they are not two expensive given that the amount of shares can be divided in a large amount of investors.
The last advantage we can draw from the articles is that even if the company becomes public and no more state-owned, the state still owns the power to put in place many rules to protect the FDJ's clients sake. The most significant investor remains the state itself.
But
The gambling addiction could progress because of the lack of interest investors will bring to this issue.
Moreover, many people feel that the company shouldn't be sold to private investors because it represent a national possession, a kind of wealth that should remain state-owned.
To finish, the main issue is that the profit motives entailed by this selling will necessarily be opposed to the need to protect people from the gambling addiction.
According to me, this operation can be really great for the country only if the state remains the main owner of the shares, otherwise it could become a danger for vulnerable people.