.. Most know where their money is and doubtful they would leave an account inactive for 5 years...
You would be surprised how many do just that, Every year the State of WI runs a list of stuff that was turned over to them. Bank accts leads the way. Several ways, divorce, joint acct and both of you thought the other took the money out already, no bothered to tell the bank of the new address, so the acct just sat there. Grand parents open a acct for grand K*ds and never bother to tell them- they move and forget to change address on that acct.- Stock you bought tanks, so you write it off and stop paying attention but the company turns around pays dividends and they have no where to send them cause you moved with out telling them. Many more ways for acct/funds to get lost-- Tax refunds checks also get lost-- WHY would any tell the government they are owed a refund but not give a correct address for the check to go to???????? but it happens a lot.
For Wis, the state does not seize the accts, but rather the holder of the accts want to stop keeping track of them so after so many years they turn them over to the state to baby sit , then after the state tried to locate them and fail any bunch of years then the state can claim them.
My self I have a $25 patronage dividend from 1981 due me, but not payable till 2001 I forgot about, 1) unaware of the dividend 2) never told them I moved several times. In the year 2005 I stop in at the the Coop free lunch once a year party and to look like a member before eating I checked to see if I had a check coming, The man handed me my check and told I was lucky they would have to turn it over to the state the next year Boy was I shocked-

but if they had turned it over I would have show up on a standard search and would have got the money the next year form the state.