Play Ticket is to support float amount prize, be in your balance as a kind of asset. Not spendable and transferable.
There is challenge for rule layer designer, about how will the amount influence your jackpot drawing, but that is up to rule layer, I think may be odds is also involved together with amount to affect the result of jackpots.
Ticket has owner, so people could buy ticket for other people as the owner of the ticket, which could be useful in the charity donation, donate in tickets?