Streaming subscriptions look cheap individually, but the real comparison is total monthly spend across however many services you actually keep, not any one service in isolation.
The subscription creep problem
A single streaming service rarely feels expensive, but content is split across enough different platforms today that watching a meaningful range of shows and movies often means subscribing to several at once — at which point the combined monthly cost can approach or exceed a traditional cable package, the exact expense streaming was originally positioned as an alternative to. Periodically reviewing which services you're actually still using regularly (versus paying for out of habit) is one of the simplest ways to catch this creep before it adds up unnoticed.
Tiers quietly control more than just ads
Many streaming services offer multiple pricing tiers that differ in more than just whether ads are shown — video resolution (up to 4K vs. capped at 1080p), the number of simultaneous streams allowed on different devices at once, and download availability for offline viewing are all commonly tier-gated features. A household with multiple people watching on different devices at the same time can hit the simultaneous-stream limit on a cheaper tier well before running into any other restriction, which is often the real reason an upgrade becomes necessary.
Ad-supported tiers vary in how many ads you'll actually see
Ad-supported tiers can differ substantially between services in ad frequency and length, and this isn't always obvious from the pricing page alone — some show a brief ad every 15–20 minutes, others considerably more. If cost is the main reason for choosing an ad-supported tier, it's worth checking recent reviews of that specific service's ad load, since "has ads" alone doesn't tell you how disruptive that specific service's ad experience actually is.
Content libraries change without notice
Streaming catalogs aren't static — licensing agreements expire and shows or movies can be removed from a service with little or no warning, sometimes including a platform's own exclusive-sounding "original" content in some circumstances. Subscribing specifically to watch one particular show is a reasonable short-term move, but it's worth treating any given month's catalog as temporary rather than assuming today's lineup represents a stable, permanent value.
The one thing people forget
Check whether a subscription actually renews automatically at a different (often higher) price after an initial promotional period, and set a personal reminder to review it before that happens. Promotional intro pricing is common enough that it's worth confirming the standard renewal price at signup, rather than being surprised by it months later.