GE employs a razor-and-blades model on an industrial scale, accepting losses on initial engine sales to powerful airframers like Boeing. This secures a multi-decade, high-margin stream of mandated service and parts revenue from a fragmented base of airline customers, where aftermarket sales can be 3-5 times the original engine price.

For service-based businesses, 80% gross margins should be the absolute minimum. This high margin is not just for profit; it is the essential fuel required to cover all other business costs like sales, marketing, and administration, making it a prerequisite for scaling.

The traditional MSP 2.0 model of reselling software seats is no longer profitable. The next evolution, MSP 3.0 or "BSP" (Business Solutions Provider), focuses on consulting and managed services to solve core business problems, shifting the revenue source from software margins to service-based value.

Selling a core product cheaply (like a printer) to lock customers into expensive consumables (ink) generates a predictable revenue stream. However, this model's primary weakness is the strong customer resentment it builds, as users feel trapped and exploited over time.

Business model innovation is a third, often-overlooked pillar of success alongside product and go-to-market. A novel business model can unlock better unit economics, align incentives with customers, and dictate the entire product and operational strategy.

Instead of absorbing labor and commission costs, a service business can bundle them into customer-facing "bin" and "initiation" fees. This shifts the financial burden of acquisition to the new customer, allowing the business to collect enough cash upfront to cover all costs and become immediately cash-flow positive on each new sale.

For owners planning a future exit, the MSP model is far superior to a reseller's project-to-project structure. The stable, predictable monthly recurring revenue (MRR) from multi-year contracts is highly attractive to investors, creating a sellable asset independent of the owner's sales prowess.

Buyers pay a premium for predictable income, not just high revenue. Even non-SaaS businesses, like a home builder, can create valuable "durable revenue" by adding contract-based services like lawn care, significantly increasing enterprise value.

Constantly delivering custom solutions is inefficient and destroys profitability. Instead, define a standardized, repeatable service package that can be sold and delivered consistently, maintaining high margins and simplifying operations.