Unfortunately yes. If everyone do something like that I would have no money to investment and my system will be little "frozen". Why not wait 720 hours and get 130%?
What you mean by "frozen"?

Because you
might run away with investor funds before the timer ends.

Do you accept escrow?
I'll send 1 BTC to an escrow and after a month, you will pay me 1.3 BTC and escrow will release the fund to you.

Frozen because this amout will be in investment. I need money to invest. No BTC = no investment. How can I invest money when BTC will be in escrow?
I accept escrow in this offer:
https://bitcointalk.org/index.php?topic=1158419.0When you win in my sports bets escrow fund will be released to me.