In the ever-evolving world of business technology, the Managed Print Service (MPS) providers operate in a dynamic and complex ecosystem. Game-changing innovations, shifting business landscapes, and the relentless march of digital transformation are constantly reshaping the contours of the MPS sphere. This write-up attempts to shed light on the future trajectories of MPS providers, unraveling predictions, and dissecting emerging trends.

One of the central players in any discussion about MPS providers are the businesses that avail these services - the demand side of the equation. The increasing cognizance among businesses about the cost and efficiency advantages that MPS offers is driving a growing demand. Moreover, the rising environmental consciousness and the impetus towards sustainability are also bolstering the shift towards MPS, given its potential for reducing paper wastage.

Yet, the MPS market is not merely driven by demand dynamics. On the supply side, MPS providers are embarking on a journey of transformation to deliver more value-added services. The future of these providers hinges on their ability to leverage technology to offer more than just print management.

Enter Artificial Intelligence (AI) and Internet of Things (IoT) - their incorporation into the MPS domain is poised to revolutionize the way services are delivered. AI-powered print management systems promise enhanced accuracy and efficiency in predicting maintenance needs, managing supplies, and ensuring smooth operations. On the other hand, IoT brings the allure of interconnected devices that can communicate and coordinate amongst themselves, further optimizing the print environment.

However, the embrace of these technologies is not without its challenges. The integration of AI and IoT introduces new vulnerabilities into the system, making cybersecurity a paramount concern. MPS providers will need to build robust security frameworks to protect their systems from cyber threats, which calls for significant investments and expertise.

The future of MPS providers also hinges on the evolution of regulatory landscapes. As data privacy laws around the world become more stringent, MPS providers will need to ensure their services are compliant. This might necessitate changes in how data is collected, stored, and used, adding another layer of complexity to their operations.

Cloud-based solutions are another trend shaping the MPS industry. The flexibility, scalability, and cost-effectiveness of these solutions make them an attractive proposition for businesses. As MPS providers transition to cloud-based platforms, they must address issues related to data security, service continuity, and data sovereignty.

In the realm of speculation, one might envision a future where MPS providers become purveyors of comprehensive IT solutions. Going beyond print services, these providers could offer services like network management, data analytics, and business process automation. This would require a significant broadening of their capabilities and repositioning in the market, but could potentially unlock new avenues of growth.

In conclusion, the future of MPS providers is a fascinating tableau of opportunities and challenges. Technology promises to transform their service delivery models, while also imposing new requirements and vulnerabilities. The changing business and regulatory landscapes add another layer of complexity. However, if MPS providers can adeptly navigate these currents, the future holds promising prospects of growth and evolution.