Nope, including the lost Bitcoins they will be all 21 million.
To be more accurate:
The exact number of bitcoins (including the lost ones) will be 20999999.9769
So, nobody can have access to their lost Bitcoin. Satoshi once said that lost Bitcoin should be considered a donation for the growth of the technology.
Satoshi never said that the lost bitcoins will help the growth of thechnology. Satoshi said that "
Lost coins only make everyone else's coins worth slightly more." and that means that it makes the price grow, not the technology.