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transaction fees before reality set in.

As in routing tx fees?

This is why mobile nodes are a dead-end, they're too costly to maintain for the low volume and online-ness of a mobile device.

Too costly for the users or the service providers? I would guess that LSP market is mainly comprised of people who put a high value on the convenience of not having to self-host. It is a good price for a noob to start learning and is not as steep a learning curve as a self-hosted set-up.

As in routing tx fees?

Correct

service providers

This one, they need to be compensated for tying up and risking capital in a hot wallet.

Yea LSPs are absolutely selling a convenience product, it's just a bad business without charging high fees... and it's the high fees make mobile nodes non-sustainable.

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