I could not agree more, in my tenure as both a CTO and a CEO I always made sure incentives where there beyond the normal wage. In essence you're putting a portion of their compensation at risk, based on the performance of the company. So, if that's the case why not bonuses to SOA architects, project leaders, governance specialists, and developers who build something that impacts the company's bottom line, positively, if done correctly?
Hear me out on this. If you've been reading my stuff I always stress the need to define the business case up front, thus the value SOA brings to the business. You can define both the value of agility and reuse, hard and soft dollars. In essence, it does not make sense that you move forward with the SOA unless it has a very positive impact on the bottom line. So, we can consider that the objective of the project, to live up to the business case.