if I look at the chronology of your writing, it looks like you have lost your wallet.dat file. what causes the wallet.dat file to not be with you? you lost your wallet.dat file in 2010 where maybe the price of bitcoin at that time was not worth it at all, because bitcoin was only worth in july 2010 at a price of $ 0.09. so that at that time you didn't really keep your wallet.dat file, because it wasn't valuable at all and now you just realized that bitcoin is very high in price.
is it possible that your laptop has been thrown away or maybe lost? now you are looking for it. but the value you offer is not only 1 bitcoin from what you have.
it is certain that those who have your wallet.dat file will not want to give other than the amount that should be given 50:50.
Hopefully what you are looking for can be given back with a fair portion of the prize, of course.
I had the same thing back in the day, it was with my old laptop that broke, but thankfully I didn't had much in it, it wasn't even bitcoin, it was litecoin and had like some faucet money in it so I am not worried about it, at max that's like maybe 1 litecoin that is gone, probably not as much.
But, I learned my lessons there, and got away cheap from it, if you are using your laptop or computer or whatever to do something like this, and store it there, then you need to back it up to somewhere, I do not know where you should do that but I know that you should do it for sure. This would allow people to have few places and if one goes, then the other still would work.