Could cheap spaceflight end finance?

Some fun with futuristic thinking:

we are capable to accelerate neutrinos up to 99.89% the speed of light.

Lets assume we will be able to achieve spaceflight at half the speed in future,.
and lets assume we can do it cheap enough, so nearly anyone could effort to do so.
That would mean everybody could place a certain amount of money on his bank account
and then fly a few hundred years into the future. This would create following questions:

Would everybody leave the century as soon as its possible?
If so, does the life on earth continue, to create the value , to pay the interest?
and if so, if anybody can create money in that way, would it be worth anything at all?

TIME is an important factor for markets, so its quite interesting,
how markets could break down, as a consequence of mastering even slightest time-travel
through the achievement of fast, cheap spaceflight

that's a funny thought, isn't it? :-)