You have to strike while the iron is hot (first mover advantage). Iron cools quickly however.
SAP systems stay in place for a long time (years). Think back 5 projects ago, do you think that system is still there? Sure it is still there. Those jobs are SAP Service opportunities.
By definition all contracts end: think 3, 6, 9, 12 months.
People come and go all the time for various reasons.
New openings or the same openings will come up from time to time.
When openings occur, there is an urgent need to fill it. The iron is hot.
It takes 6 weeks on average from the time a candidate sends in their resume to do all the red tape necessary to get their package ready to review with the customer. The iron cools down.
Be proactive so you can strike while the iron is hot. If you wait someone else will beat you to the opportunity.