Microsoft (MSFT) is the primary direct exposure, since Copilot-enabled features in Microsoft 365 position AI writing assistance as a core productivity moat for the company. Alphabet (GOOGL) offers indirect exposure through Google Docs AI features, while Amazon (AMZN) adds additional optional exposure via AWS Bedrock and related language-model services. Beyond single names, investors can gain sector exposure to cloud infrastructure and AI platforms (NVDA), which power the compute and acceleration behind modern writing assistants, and to enterprise software ecosystems around AI-assisted workflows. Entrepreneurially, opportunities exist to build niche writing tools, templates, and integration services that plug into Microsoft 365 or Google Workspace, or to offer specialized editing and compliance-grade workflows for specific industries.