Plough back is associated with expanding a business or increasing its resources. The start-up decided to plough back its initial earnings to fund research and development.
Pro Tip 2/3
Long-term Strategy
Using 'plough back' suggests a long-term vision for a company's financial strategy. Rather than pay out dividends, they will plough back profits to secure long-term growth.
Pro Tip 3/3
Financial Commitment
The phrase implies a commitment of financial resources for future benefits. They chose to plough back the capital into new technology for the factory.