Most owner workflows do not need a dashboard
A lot of small software projects start too big. The owner asks for an app, but the real need is much smaller: capture this request, summarize this file, draft this reply, remind me tomorrow.
Telegram is a strong surface because the owner already uses it like a command center. No new portal, no new habit, no internal launch campaign.
Custom SaaS is right when the interface is the product
If customers need accounts, reports, billing, permissions, and a polished web UI, build SaaS. That is a product.
If the owner needs an assistant that lives where they already work, a private Telegram bot is usually faster, cheaper, and easier to keep using.