You are a reader of Jensos Direct-Drive-Vesc-6-Thread so you probably read that he used the “unleashed-Firmware” that is availeable.
There you can set you Amps to whatever. Jenso tried it up to 130 Phase Amps and 100 Batt Amps if i remember right.
So i guess with really huge heatsink and good cooling you could potentially go to 200Amps ?
But High Amps produce High Temperature (generally speaking), so a better Solution to get more Watts is increasing the Voltage.
But whats the Purpose actually ? an Ebike ?
The Vesc (6) is for sure a great skateboard ESC but its save Limit is at 12 s (50Volt fully carged, and potentially 60Volt Spikes). It think for High-Power-Ebikes (5000Watts and more) there are other Controllers with the ability of taking ~100Volts (20s-25s). with the effect of needing less Amps then.
Ceck out Adaptto controller from Russia, they are amazing, i use two of the Minis with up to 4KW, an they include BMS, Carging-coil, Display,… Sure, not Open-Source, but really amazing customer-service and reaction on customers wishes in my experience. (They will actually release a new Version “soon”)