Like NetTecture says it depends totally on your business - there's many web businesses took years to break to profit, others profitable from almost day one.
What you also have to bear in mind is business plan / financial forecast is frequently far better labelled "wild and crazy guesses". 3 year plans are almost always off.
So a better way of looking at it perhaps is how does this affect you?
What can change in two years?
Can you handle the year 1 scenario of $1/4m loss?
Have you run a worst case and expected case scenario?
Have you run a SWOT analysis also?